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CVE-2019-12526

Publication date 26 November 2019

Last updated 24 July 2024

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

9.8 · Critical

Score breakdown

An issue was discovered in Squid before 4.9. URN response handling in Squid suffers from a heap-based buffer overflow. When receiving data from a remote server in response to an URN request, Squid fails to ensure that the response can fit within the buffer. This leads to attacker controlled data overflowing in the heap.

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

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 9.8 · Critical
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

References

Related Ubuntu Security Notices (USN)

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

Other references