VulnerabilityModified
CVE-2021-3696
A heap out-of-bounds write may heppen during the handling of Huffman tables in the PNG reader.
MEDIUM 4.5EPSS 0.47%
Does this matter?
Lower severity and a low EPSS score (0.47%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 4.5 MEDIUMCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L
- EPSS
- 0.47% probability · 40th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-787
- Affected
- gnu/grub2 · redhat/developer tools · redhat/openshift · redhat/enterprise linux · redhat/enterprise linux eus · redhat/enterprise linux for power little endian · redhat/enterprise linux for power little endian eus · redhat/enterprise linux server aus · redhat/enterprise linux server for power little endian update services for sap solutions · redhat/enterprise linux server tus · redhat/openshift container platform · redhat/codeready linux builder · netapp/ontap select deploy administration utility
- Source
- secalert@redhat.com
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1991686Issue Tracking, Third Party Advisory
- 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, Third Party Advisory
- https://security.gentoo.org/glsa/202209-12Third Party Advisory
- https://security.netapp.com/advisory/ntap-20220930-0001/Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.