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mageiaGentoo FoundationMGASA-2021-0403
HistoryAug 14, 2021 - 5:00 p.m.

Updated firefox packages fix security vulnerabilities

2021-08-1417:00:09
Gentoo Foundation
advisories.mageia.org
24

8.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

6.8 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:M/Au:N/C:P/I:P/A:P

0.014 Low

EPSS

Percentile

86.3%

Updated firefox packages fix security vulnerabilities: Uninitialized memory in a canvas object could have caused an incorrect free() leading to memory corruption and a potentially exploitable crash (CVE-2021-29980). Instruction reordering during JIT optimization resulted in a sequence of instructions that would cause an object to be incorrectly considered during garbage collection. This led to memory corruption and a potentially exploitable crash (CVE-2021-29984). A use-after-free vulnerability in media channels could have led to memory corruption and a potentially exploitable crash (CVE-2021-29985). A suspected race condition when calling getaddrinfo while resolving DNS names could have led to memory corruption and a potentially exploitable crash (CVE-2021-29986). Firefox incorrectly treated an inline list-item element as a block element, resulting in an out of bounds read or memory corruption, and a potentially exploitable crash (CVE-2021-29988). Mozilla developers Christoph Kerschbaumer, Simon Giesecke, Sandor Molnar, and Olli Pettay reported memory safety bugs present in Firefox ESR 78.12. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code (CVE-2021-29989).

8.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

6.8 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:M/Au:N/C:P/I:P/A:P

0.014 Low

EPSS

Percentile

86.3%

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