Multiple vulnerabilities in Mozilla Firefox and Firefox ESR



Published: 2020-03-10 | Updated: 2021-07-01
Risk High
Patch available YES
Number of vulnerabilities 12
CVE-ID CVE-2020-6805
CVE-2020-6806
CVE-2020-6807
CVE-2020-6808
CVE-2020-6809
CVE-2020-6810
CVE-2020-6811
CVE-2019-20503
CVE-2020-6812
CVE-2020-6813
CVE-2020-6814
CVE-2020-6815
CWE-ID CWE-416
CWE-125
CWE-451
CWE-264
CWE-20
CWE-200
CWE-119
Exploitation vector Network
Public exploit N/A
Vulnerable software
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Mozilla Firefox
Client/Desktop applications / Web browsers

Firefox ESR
Client/Desktop applications / Web browsers

Vendor Mozilla

Security Bulletin

This security bulletin contains information about 12 vulnerabilities.

1) Use-after-free

EUVDB-ID: #VU25849

Risk: High

CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-6805

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a use-after-free error when removing data about origins in Quota manager in Mozilla Firefox. A remote attacker can create a specially crafted web page, trick the victim into visiting it, trigger a use-after-free error and execute arbitrary code on the target system.

Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Mozilla Firefox: 65.0 - 73.0.1

Firefox ESR: 60.0 - 60.9.0, 68.0 - 68.5.0


CPE2.3 External links

http://www.mozilla.org/en-US/security/advisories/mfsa2020-08/
http://bugzilla.mozilla.org/show_bug.cgi?id=1610880
http://www.mozilla.org/en-US/security/advisories/mfsa2020-09/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to visit a specially crafted website.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Out-of-bounds read

EUVDB-ID: #VU25850

Risk: High

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-6806

CWE-ID: CWE-125 - Out-of-bounds Read

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to an out-of-bounds read error due to BodyStream::OnInputStreamReady was missing protections against state confusion. A remote attacker can create a specially crafted web page, trick the victim into visiting it, trigger memory corruption and execute arbitrary code on the target system.

Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Mozilla Firefox: 65.0 - 73.0.1

Firefox ESR: 60.0 - 60.9.0, 68.0 - 68.5.0


CPE2.3 External links

http://www.mozilla.org/en-US/security/advisories/mfsa2020-08/
http://www.mozilla.org/en-US/security/advisories/mfsa2020-09/
http://bugzilla.mozilla.org/show_bug.cgi?id=1612308

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to visit a specially crafted website.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

3) Use-after-free

EUVDB-ID: #VU25851

Risk: High

CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-6807

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a use-after-free error in cubeb during stream destruction. A remote attacker can create a specially crafted web page, trick the victim into visiting it, trigger a use-after-free error and execute arbitrary code on the target system.

Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Mozilla Firefox: 65.0 - 73.0.1

Firefox ESR: 60.0 - 60.9.0, 68.0 - 68.5.0


CPE2.3 External links

http://www.mozilla.org/en-US/security/advisories/mfsa2020-08/
http://www.mozilla.org/en-US/security/advisories/mfsa2020-09/
http://bugzilla.mozilla.org/show_bug.cgi?id=1614971

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to visit a specially crafted website.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

4) Spoofing attack

EUVDB-ID: #VU25852

Risk: Low

CVSSv3.1: 2.7 [CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-6808

CWE-ID: CWE-451 - User Interface (UI) Misrepresentation of Critical Information (Clickjacking, spoofing)

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform spoofing attack.

The vulnerability exists due to incorrect processing of user-supplied data. A remote attacker can create a specially crafted web page and spoof web page URL via a javascript: URL.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Mozilla Firefox: 65.0 - 73.0.1


CPE2.3 External links

http://www.mozilla.org/en-US/security/advisories/mfsa2020-08/
http://bugzilla.mozilla.org/show_bug.cgi?id=1247968

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to visit a specially crafted website.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

5) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU25853

Risk: Low

CVSSv3.1: 2.7 [CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-6809

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

The vulnerability allows a remote attacker to escalate privileges on the system.

The vulnerability exists due to Web Extension with all-urls permissions is allowed to access local files. A remote attacker can trick the victim into installing a malicious browser extension and gain access to sensitive information on the system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Mozilla Firefox: 65.0 - 73.0.1


CPE2.3 External links

http://www.mozilla.org/en-US/security/advisories/mfsa2020-08/
http://bugzilla.mozilla.org/show_bug.cgi?id=1420296

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to visit a specially crafted website.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

6) Spoofing attack

EUVDB-ID: #VU25854

Risk: Low

CVSSv3.1: 2.7 [CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-6810

CWE-ID: CWE-451 - User Interface (UI) Misrepresentation of Critical Information (Clickjacking, spoofing)

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform spoofing attack.

After a website had entered fullscreen mode, it could have used a previously opened popup to obscure the notification that indicates the browser is in fullscreen mode. Combined with spoofing the browser chrome, this could have led to confusing the user about the current origin of the page and credential theft or other attacks.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Mozilla Firefox: 65.0 - 73.0.1


CPE2.3 External links

http://www.mozilla.org/en-US/security/advisories/mfsa2020-08/
http://bugzilla.mozilla.org/show_bug.cgi?id=1432856

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to visit a specially crafted website.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

7) Input validation error

EUVDB-ID: #VU25855

Risk: Low

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-6811

CWE-ID: CWE-20 - Improper Input Validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary OS commands.

The vulnerability exists due to insufficient validation of user-supplied input copied into buffer via the 'Copy as cURL' feature of Devtools' network tab. A remote attacker can trick the victim into using the 'Copy as cURL' feature to copy malicious data into buffer and later insert them into a terminal window.

Successful exploitation of the vulnerability may result in OS command execution.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Mozilla Firefox: 65.0 - 73.0.1

Firefox ESR: 60.0 - 60.9.0, 68.0 - 68.5.0


CPE2.3 External links

http://www.mozilla.org/en-US/security/advisories/mfsa2020-08/
http://www.mozilla.org/en-US/security/advisories/mfsa2020-09/
http://bugzilla.mozilla.org/show_bug.cgi?id=1607742

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to visit a specially crafted website.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

8) Out-of-bounds read

EUVDB-ID: #VU25856

Risk: Medium

CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-20503

CWE-ID: CWE-125 - Out-of-bounds Read

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition in sctp_load_addresses_from_init in usrsctp. A remote attacker can pass specially crafted data to the application, trigger out-of-bounds read error and read contents of memory on the system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Mozilla Firefox: 65.0 - 73.0.1

Firefox ESR: 60.0 - 60.9.0, 68.0 - 68.5.0


CPE2.3 External links

http://www.mozilla.org/en-US/security/advisories/mfsa2020-08/
http://www.mozilla.org/en-US/security/advisories/mfsa2020-09/
http://bugzilla.mozilla.org/show_bug.cgi?id=1613765

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to visit a specially crafted website.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

9) Information disclosure

EUVDB-ID: #VU25857

Risk: Low

CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-6812

CWE-ID: CWE-200 - Information Exposure

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The first time AirPods are connected to an iPhone, they become named after the user's name by default (e.g. Jane Doe's AirPods.) Websites with camera or microphone permission are able to enumerate device names, disclosing the user's name.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Mozilla Firefox: 65.0 - 73.0.1

Firefox ESR: 60.0 - 60.9.0, 68.0 - 68.5.0


CPE2.3 External links

http://www.mozilla.org/en-US/security/advisories/mfsa2020-08/
http://bugzilla.mozilla.org/show_bug.cgi?id=1616661
http://www.mozilla.org/en-US/security/advisories/mfsa2020-09/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to visit a specially crafted website.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

10) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU25858

Risk: Low

CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-6813

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass certain security restrictions.

When protecting CSS blocks with the nonce feature of Content Security Policy, the @import statement in the CSS block could allow an attacker to inject arbitrary styles, bypassing the intent of the Content Security Policy.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Mozilla Firefox: 65.0 - 73.0.1


CPE2.3 External links

http://www.mozilla.org/en-US/security/advisories/mfsa2020-08/
http://bugzilla.mozilla.org/show_bug.cgi?id=1605814

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to visit a specially crafted website.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

11) Buffer overflow

EUVDB-ID: #VU25859

Risk: High

CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-6814

CWE-ID: CWE-119 - Improper Restriction of Operations within the Bounds of a Memory Buffer

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error when processing HTML content. A remote attacker can create a specially crafted website, trick the victim into opening it, trigger memory corruption and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Mozilla Firefox: 65.0 - 73.0.1

Firefox ESR: 60.0 - 60.9.0, 68.0 - 68.5.0


CPE2.3 External links

http://www.mozilla.org/en-US/security/advisories/mfsa2020-08/
http://bugzilla.mozilla.org/buglist.cgi?bug_id=1592078%2C1604847%2C1608256%2C1612636%2C1614339
http://www.mozilla.org/en-US/security/advisories/mfsa2020-09/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to visit a specially crafted website.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

12) Buffer overflow

EUVDB-ID: #VU25860

Risk: High

CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-6815

CWE-ID: CWE-119 - Improper Restriction of Operations within the Bounds of a Memory Buffer

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error when processing HTML content. A remote attacker can create a specially crafted website, trick the victim into opening it, trigger memory corruption and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Mozilla Firefox: 65.0 - 73.0.1


CPE2.3 External links

http://www.mozilla.org/en-US/security/advisories/mfsa2020-08/
http://bugzilla.mozilla.org/buglist.cgi?bug_id=1181957%2C1557732%2C1557739%2C1611457%2C1612431

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to visit a specially crafted website.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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