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Affected Component
Analysis
grub
Exploitable
Name
CVE-2021-3696
Description
A heap out-of-bounds write may heppen during the handling of Huffman tables in the PNG reader. This may lead to data corruption in the heap space. Confidentiality, Integrity and Availablity impact may be considered Low as it's very complex to an attacker control the encoding and positioning of corrupted Huffman entries to achieve results such as arbitrary code execution and/or secure boot circumvention. This flaw affects grub2 versions prior grub-2.12.
Published Date
Updated Date
Workaround
-
Advisories
https://bugzilla.redhat.com/show_bug.cgi?id=1991686Issue Tracking
https://security.gentoo.org/glsa/202209-12Third Party Advisory
https://security.netapp.com/advisory/ntap-20220930-0001/Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1991686Issue Tracking
https://security.gentoo.org/glsa/202209-12Third Party Advisory
https://security.netapp.com/advisory/ntap-20220930-0001/Third Party Advisory
Analysis#
Vulnerability Ratings#
4.5
CVSSv31
6.9
CVSSv2