Multiple vulnerabilities in Mozilla Firefox and Firefox ESR

1) Type Confusion

EUVDB-ID: #VU96733

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-2024-8385

CWE-ID: CWE-843 - Type confusion

Exploit availability: No

Description

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

The vulnerability exists due to a type confusion error when handling StructFields and ArrayTypes in WASM. A remote attacker can trick the victim into visiting a specially crafted website, trigger a type confusion error 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: 120.0 - 129.0.2

Firefox ESR: 128.0 - 128.1.0

Firefox for Android: 120.0 - 129.0.2

CPE2.3

External links

http://www.mozilla.org/en-US/security/advisories/mfsa2024-39/
http://www.mozilla.org/en-US/security/advisories/mfsa2024-40/

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) Type Confusion

EUVDB-ID: #VU96735

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-2024-8381

CWE-ID: CWE-843 - Type confusion

Exploit availability: No

Description

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

The vulnerability exists due to a type confusion error when looking up a property name in a "with" block. A remote attacker can trick the victim into visiting a specially crafted website, trigger a type confusion error 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: 100.0 - 129.0.2

Firefox ESR: 102.0 - 128.1.0

Firefox for Android: 100.1.0 - 129.0.2

CPE2.3

External links

http://www.mozilla.org/en-US/security/advisories/mfsa2024-39/
http://www.mozilla.org/en-US/security/advisories/mfsa2024-40/
http://www.mozilla.org/en-US/security/advisories/mfsa2024-41/

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) Insufficient UI Warning of Dangerous Operations

EUVDB-ID: #VU96734

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-2024-8388

CWE-ID: CWE-357 - Insufficient UI Warning of Dangerous Operations

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform spoofing attack.

The vulnerability exists due to multiple prompts and panels from both Firefox and the Android OS could be used to obscure the notification announcing the transition to fullscreen mode. A remote attacker can perform spoofing attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Firefox for Android: 121.0 - 129.0.2

CPE2.3

External links

http://www.mozilla.org/en-US/security/advisories/mfsa2024-39/

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) Exposed dangerous method or function

EUVDB-ID: #VU96736

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-2024-8382

CWE-ID: CWE-749 - Exposed Dangerous Method or Function

Exploit availability: No

Description

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

The vulnerability exists due to internal browser event interfaces are exposed to web content when privileged EventHandler listener callbacks ran for those events. A remote attacker can indicate usage of certain browser features, such as when a user opens the Dev Tools console.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Mozilla Firefox: 100.0 - 129.0.2

Firefox ESR: 102.0 - 128.1.0

Firefox for Android: 100.1.0 - 129.0.2

CPE2.3

External links

http://www.mozilla.org/en-US/security/advisories/mfsa2024-39/
http://www.mozilla.org/en-US/security/advisories/mfsa2024-40/
http://www.mozilla.org/en-US/security/advisories/mfsa2024-41/

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) Improper Authorization in Handler for Custom URL Scheme

EUVDB-ID: #VU96737

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-2024-8383

CWE-ID: CWE-939 - Improper Authorization in Handler for Custom URL Scheme

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise the affected system.

The vulnerability exists due to a missing confirmation dialog when opening the Usenet-related schemes "news:" and "snews:". A remote attacker can trick the victim into downloading a malicious application that can be launched at will without any additional prompts.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Mozilla Firefox: 100.0 - 129.0.2

Firefox ESR: 102.0 - 128.1.0

Firefox for Android: 100.1.0 - 129.0.2

CPE2.3

External links

http://www.mozilla.org/en-US/security/advisories/mfsa2024-39/
http://www.mozilla.org/en-US/security/advisories/mfsa2024-40/
http://www.mozilla.org/en-US/security/advisories/mfsa2024-41/

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) Buffer overflow

EUVDB-ID: #VU96738

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-2024-8384

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 a boundary error in JavaScript garbage collector when HTML content. A remote attacker can trick the victim into visiting a specially crafted website, 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: 100.0 - 129.0.2

Firefox ESR: 102.0 - 128.1.0

Firefox for Android: 100.1.0 - 129.0.2

CPE2.3

External links

http://www.mozilla.org/en-US/security/advisories/mfsa2024-39/
http://www.mozilla.org/en-US/security/advisories/mfsa2024-40/
http://www.mozilla.org/en-US/security/advisories/mfsa2024-41/

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) Buffer overflow

EUVDB-ID: #VU96739

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-2024-8389

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 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: 129.0 - 129.0.2

Firefox for Android: 129.0 - 129.0.2

CPE2.3

External links

http://www.mozilla.org/en-US/security/advisories/mfsa2024-39/

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) Buffer overflow

EUVDB-ID: #VU96740

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-2024-8387

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 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: 120.0 - 129.0.2

Firefox ESR: 128.0 - 128.1.0

Firefox for Android: 120.0 - 129.0.2

CPE2.3

External links

http://www.mozilla.org/en-US/security/advisories/mfsa2024-39/
http://www.mozilla.org/en-US/security/advisories/mfsa2024-40/

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) Improper Restriction of Rendered UI Layers or Frames

EUVDB-ID: #VU96741

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-2024-8386

CWE-ID: CWE-1021 - Improper Restriction of Rendered UI Layers or Frames

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform spoofing attack.

The vulnerability exists due to an error when displaying SelectElements popup if a site had been granted the permission to open popup windows. A remote attacker can perform spoofing attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Mozilla Firefox: 120.0 - 129.0.2

Firefox ESR: 128.0 - 128.1.0

Firefox for Android: 120.0 - 129.0.2

CPE2.3

External links

http://www.mozilla.org/en-US/security/advisories/mfsa2024-39/
http://www.mozilla.org/en-US/security/advisories/mfsa2024-40/

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.

Risk	High
Patch available	YES
Number of vulnerabilities	9
CVE-ID	CVE-2024-8385 CVE-2024-8381 CVE-2024-8388 CVE-2024-8382 CVE-2024-8383 CVE-2024-8384 CVE-2024-8389 CVE-2024-8387 CVE-2024-8386
CWE-ID	CWE-843 CWE-357 CWE-749 CWE-939 CWE-119 CWE-1021
Exploitation vector	Network
Public exploit	N/A
Vulnerable software	Mozilla Firefox Client/Desktop applications / Web browsers Firefox ESR Client/Desktop applications / Web browsers Firefox for Android Mobile applications / Apps for mobile phones
Vendor	Mozilla