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HistoryAug 10, 2021 - 7:18 a.m.

[SECURITY] [DLA 2738-1] c-ares security update

2021-08-1007:18:07
lists.debian.org
40

CVSS2

6.8

Attack Vector

NETWORK

Attack 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

CVSS3

5.6

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

LOW

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

AI Score

6.2

Confidence

High

EPSS

0.002

Percentile

52.8%


Debian LTS Advisory DLA-2738-1 [email protected]
https://www.debian.org/lts/security/ Thorsten Alteholz
August 10, 2021 https://wiki.debian.org/LTS


Package : c-ares
Version : 1.12.0-1+deb9u2
CVE ID : CVE-2021-3672

An issue has been found in c-ares, an asynchronous name resolver.
Missing input validation of host names returned by Domain Name Servers can
lead to output of wrong hostnames.

For Debian 9 stretch, this problem has been fixed in version
1.12.0-1+deb9u2.

We recommend that you upgrade your c-ares packages.

For the detailed security status of c-ares please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/c-ares

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS

CVSS2

6.8

Attack Vector

NETWORK

Attack 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

CVSS3

5.6

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

LOW

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

AI Score

6.2

Confidence

High

EPSS

0.002

Percentile

52.8%