Debian update for firefox-esr

1) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU20824

Risk: Medium

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-2019-9812

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

Exploit availability: No

Description

The vulnerability allows a remote attacker to escape sandbox restrictions.

The vulnerability exists due to a combination of issues related to a compromised sandboxed content and the Firefox Sync ability to  synchronize data with the malicious account. A remote attacker can can compromise a sandboxed content process using a different vulnerability, and then escape that sandbox by loading accounts.firefox.com in that process and forcing a log-in to a malicious Firefox Sync account. Preference settings that disable the sandbox are then synchronized to the local machine and the compromised browser would restart without the sandbox if a crash is triggered.

Mitigation

Update the affected package to version: 60.9.0esr-1~deb9u1, 60.9.0esr-1~deb10u1

Vulnerable software versions

firefox-esr (Debian package): 60.9.0esr-1~deb8u1 - 60.9.0esr-1~deb9u1

External links

http://www.debian.org/security/2019/dsa-4516

Q & A

Can this vulnerability be exploited remotely?

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

Is there known malware, which exploits this vulnerability?

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

2) Buffer overflow

EUVDB-ID: #VU20836

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-2019-11740

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

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

The vulnerability exists due to boundary errors when processing HTML content. A remote attacker can create a specially crafted web page, 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

Update the affected package to version: 60.9.0esr-1~deb9u1, 60.9.0esr-1~deb10u1

Vulnerable software versions

firefox-esr (Debian package): 60.9.0esr-1~deb8u1 - 60.9.0esr-1~deb9u1

External links

http://www.debian.org/security/2019/dsa-4516

Q & A

Can this vulnerability be exploited remotely?

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

Is there known malware, which exploits this vulnerability?

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

3) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU20820

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-2019-11742

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

Exploit availability: No

Description

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

The vulnerability exists due to the way the same origin policy is applied to cached images in a combination of SVG filters and a element. A remote attacker can violate same-origin policy and access images from another domain. 

Mitigation

Update the affected package to version: 60.9.0esr-1~deb9u1, 60.9.0esr-1~deb10u1

Vulnerable software versions

firefox-esr (Debian package): 60.9.0esr-1~deb8u1 - 60.9.0esr-1~deb9u1

External links

http://www.debian.org/security/2019/dsa-4516

Q & A

Can this vulnerability be exploited remotely?

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

Is there known malware, which exploits this vulnerability?

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

4) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU20826

Risk: Medium

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-11743

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

Exploit availability: No

Description

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

The vulnerability exists due to incorrect implementation of the unload event. A remote attacker can create a specially crafted web page, trick the victim into visiting and gain access to user's history through timing side-channel attacks. 

Mitigation

Update the affected package to version: 60.9.0esr-1~deb9u1, 60.9.0esr-1~deb10u1

Vulnerable software versions

firefox-esr (Debian package): 60.9.0esr-1~deb8u1 - 60.9.0esr-1~deb9u1

External links

http://www.debian.org/security/2019/dsa-4516

Q & A

Can this vulnerability be exploited remotely?

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

Is there known malware, which exploits this vulnerability?

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

5) Cross-site scripting

EUVDB-ID: #VU20819

Risk: Medium

CVSSv3.1: 5.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-11744

CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Exploit availability: No

Description

The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data within

Mitigation

Update the affected package to version: 60.9.0esr-1~deb9u1, 60.9.0esr-1~deb10u1

Vulnerable software versions

firefox-esr (Debian package): 60.9.0esr-1~deb8u1 - 60.9.0esr-1~deb9u1

External links

http://www.debian.org/security/2019/dsa-4516

Q & A

Can this vulnerability be exploited remotely?

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

Is there known malware, which exploits this vulnerability?

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

6) Use-after-free

EUVDB-ID: #VU20818

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-2019-11746

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 while manipulating video elements if the body is freed while still in use. A remote attacker can create a specially crafted website, trick the victim into visiting it, trigger use-after-free error and execute arbitrary code on the target system with privileges of the current user.

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

Mitigation

Update the affected package to version: 60.9.0esr-1~deb9u1, 60.9.0esr-1~deb10u1

Vulnerable software versions

firefox-esr (Debian package): 60.9.0esr-1~deb8u1 - 60.9.0esr-1~deb9u1

External links

http://www.debian.org/security/2019/dsa-4516

Q & A

Can this vulnerability be exploited remotely?

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

Is there known malware, which exploits this vulnerability?

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

7) Use-after-free

EUVDB-ID: #VU20823

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-2019-11752

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 extracting a key value in IndexedDB. A remote attacker can create specially crafted webpage, trick the victim into visiting it, trigger a user-after-free error by deleting the IndexedDB key value and subsequently make the application try to extract it during conversion.

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

Mitigation

Update the affected package to version: 60.9.0esr-1~deb9u1, 60.9.0esr-1~deb10u1

Vulnerable software versions

firefox-esr (Debian package): 60.9.0esr-1~deb8u1 - 60.9.0esr-1~deb9u1

External links

http://www.debian.org/security/2019/dsa-4516

Q & A

Can this vulnerability be exploited remotely?

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

Is there known malware, which exploits this vulnerability?

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