Bug 2048936 (CVE-2021-45951) - CVE-2021-45951 dnsmasq: a heap-based buffer overflow in check_bad_address [NEEDINFO]
Summary: CVE-2021-45951 dnsmasq: a heap-based buffer overflow in check_bad_address
Keywords:
Status: NEW
Alias: CVE-2021-45951
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2048937
Blocks: 2048923
TreeView+ depends on / blocked
 
Reported: 2022-02-01 08:34 UTC by Marian Rehak
Modified: 2022-05-19 11:28 UTC (History)
16 users (show)

Fixed In Version:
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Clone Of:
Environment:
Last Closed:
rschiron: needinfo? (pemensik)


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System ID Private Priority Status Summary Last Updated
chromium.org oss-fuzz 35868 0 None None None 2022-02-14 23:51:26 UTC

Description Marian Rehak 2022-02-01 08:34:26 UTC
A heap-based buffer overflow in check_bad_address (called from check_for_bogus_wildcard and FuzzCheckForBogusWildcard).

Reference:

https://github.com/google/oss-fuzz-vulns/blob/main/vulns/dnsmasq/OSV-2021-924.yaml
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=35868

Comment 1 Marian Rehak 2022-02-01 08:34:41 UTC
Created dnsmasq tracking bugs for this issue:

Affects: fedora-all [bug 2048937]


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