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Bug 877795 - mail-mta/exim: UAF in dmarc_dns_lookup
Summary: mail-mta/exim: UAF in dmarc_dns_lookup
Status: RESOLVED FIXED
Alias: None
Product: Gentoo Security
Classification: Unclassified
Component: Vulnerabilities (show other bugs)
Hardware: All Linux
: Normal minor (vote)
Assignee: Gentoo Security
URL: https://git.exim.org/exim.git/commit/...
Whiteboard: B3 [noglsa]
Keywords:
Depends on:
Blocks:
 
Reported: 2022-10-21 00:32 UTC by John Helmert III
Modified: 2022-10-21 14:36 UTC (History)
1 user (show)

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Package list:
Runtime testing required: ---

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Description John Helmert III archtester Gentoo Infrastructure gentoo-dev Security 2022-10-21 00:32:31 UTC 
CVE-2022-3620:

A vulnerability was found in Exim and classified as problematic. This issue affects the function dmarc_dns_lookup of the file dmarc.c of the component DMARC Handler. The manipulation leads to use after free. The attack may be initiated remotely. The name of the patch is 12fb3842f81bcbd4a4519d5728f2d7e0e3ca1445. It is recommended to apply a patch to fix this issue. The associated identifier of this vulnerability is VDB-211919.

Unclear if there's any potential for triggering remotely. Patch at URL.
Comment 1 Fabian Groffen gentoo-dev 2022-10-21 06:38:50 UTC 
patch is already applied in mail-mta/exim-4.96-r2 (the only version it applies for)
Comment 2 John Helmert III archtester Gentoo Infrastructure gentoo-dev Security 2022-10-21 14:36:18 UTC 
Ah, thanks! No GLSA, just as the other one. I'll move the CVE over too.