CVE-2019-18679

Publication date 26 November 2019

Last updated 24 July 2024

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

7.5 · High

Score breakdown

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.

Read the notes from the security team

Status

Package Ubuntu Release Status
squid 21.04 hirsute
Fixed 4.9-2ubuntu1
20.10 groovy
Fixed 4.9-2ubuntu1
20.04 LTS focal
Fixed 4.9-2ubuntu1
19.10 eoan
Fixed 4.8-1ubuntu2.1
19.04 disco
Fixed 4.4-1ubuntu2.3
18.04 LTS bionic Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
squid3 21.04 hirsute Not in release
20.10 groovy Not in release
20.04 LTS focal Not in release
19.10 eoan Not in release
19.04 disco Not in release
18.04 LTS bionic
Fixed 3.5.27-1ubuntu1.4
16.04 LTS xenial
Fixed 3.5.12-1ubuntu7.9
14.04 LTS trusty Not in release

Notes

mdeslaur

same patch as CVE-2019-18678

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
squid

Severity score breakdown

Parameter Value
Base score 7.5 · High
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

References

Related Ubuntu Security Notices (USN)

    • USN-4213-1
    • Squid vulnerabilities
    • 4 December 2019

Other references