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CVE-2019-18679

Published: 26 November 2019

An issue was discovered in Squid 2.x, 3.x, and 4.x through 4.8. Due to incorrect data management, it is vulnerable to information disclosure when processing HTTP Digest Authentication. Nonce tokens contain the raw byte value of a pointer that sits within heap memory allocation. This information reduces ASLR protections and may aid attackers isolating memory areas to target for remote code execution attacks.

Notes

AuthorNote
mdeslaur
same patch as CVE-2019-18678

Priority

Medium

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package Release Status
squid
Launchpad, Ubuntu, Debian
hirsute
Released (4.9-2ubuntu1)
bionic Does not exist

disco
Released (4.4-1ubuntu2.3)
eoan
Released (4.8-1ubuntu2.1)
focal
Released (4.9-2ubuntu1)
groovy
Released (4.9-2ubuntu1)
trusty Does not exist

upstream
Released (4.9-1)
xenial Does not exist

Patches:
upstream: http://www.squid-cache.org/Versions/v4/changesets/squid-4-671ba97abe929156dc4c717ee52ad22fba0f7443.patch
squid3
Launchpad, Ubuntu, Debian
hirsute Does not exist

bionic
Released (3.5.27-1ubuntu1.4)
disco Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

trusty Does not exist

upstream Needs triage

xenial
Released (3.5.12-1ubuntu7.9)

Severity score breakdown

Parameter Value
Base score 7.5
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact None
Availability impact None
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N