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ubuntucveUbuntu.comUB:CVE-2024-25629
HistoryFeb 23, 2024 - 12:00 a.m.

CVE-2024-25629

2024-02-2300:00:00
ubuntu.com
ubuntu.com
8
c-ares library
asynchronous dns
configuration files
memory read
crash
fix
unix

4.4 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

6.8 Medium

AI Score

Confidence

Low

0.0004 Low

EPSS

Percentile

15.5%

c-ares is a C library for asynchronous DNS requests. ares__read_line() is
used to parse local configuration files such as /etc/resolv.conf,
/etc/nsswitch.conf, the HOSTALIASES file, and if using a c-ares version
prior to 1.27.0, the /etc/hosts file. If any of these configuration files
has an embedded NULL character as the first character in a new line, it
can lead to attempting to read memory prior to the start of the given
buffer which may result in a crash. This issue is fixed in c-ares 1.27.0.
No known workarounds exist.

OSVersionArchitecturePackageVersionFilename
ubuntu18.04noarchc-ares< 1.14.0-1ubuntu0.2+esm2UNKNOWN
ubuntu20.04noarchc-ares< 1.15.0-1ubuntu0.5UNKNOWN
ubuntu22.04noarchc-ares< 1.18.1-1ubuntu0.22.04.3UNKNOWN
ubuntu23.10noarchc-ares< 1.19.1-3ubuntu0.1UNKNOWN
ubuntu16.04noarchc-ares< 1.10.0-3ubuntu0.2+esm3UNKNOWN

4.4 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

6.8 Medium

AI Score

Confidence

Low

0.0004 Low

EPSS

Percentile

15.5%