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CVE-2014-3484

Published: 20 February 2020

Multiple stack-based buffer overflows in the __dn_expand function in network/dn_expand.c in musl libc 1.1x before 1.1.2 and 0.9.13 through 1.0.3 allow remote attackers to (1) have unspecified impact via an invalid name length in a DNS response or (2) cause a denial of service (crash) via an invalid name length in a DNS response, related to an infinite loop with no output.

From the Ubuntu Security Team

It was discovered that musl did not properly handle the parsing of DNS response codes. An remote attacker could use this vulnerability to cause resource consumption (infinite loop), denial of service, or possibly execute arbitrary code.

Priority

Medium

Cvss 3 Severity Score

9.8

Score breakdown

Status

Package Release Status
musl
Launchpad, Ubuntu, Debian
artful Not vulnerable
(1.1.4-1)
bionic Not vulnerable
(1.1.4-1)
cosmic Not vulnerable
(1.1.4-1)
disco Not vulnerable
(1.1.4-1)
lucid Does not exist

precise Does not exist

saucy Does not exist

trusty
Released (0.9.15-1ubuntu0.1~esm1)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
upstream
Released (1.0.3 and 1.1.2)
utopic Ignored
(end of life)
vivid Not vulnerable
(1.1.4-1)
wily Not vulnerable
(1.1.4-1)
xenial Not vulnerable
(1.1.4-1)
yakkety Not vulnerable
(1.1.4-1)
zesty Not vulnerable
(1.1.4-1)
Patches:
upstream: http://git.musl-libc.org/cgit/musl/commit/?id=b3d9e0b94ea73c68ef4169ec82c898ce59a4e30a

Severity score breakdown

Parameter Value
Base score 9.8
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H