High severity · published Jul 1, 2021
CVE-2021-36089
Grok 7.6.6 through 9.2.0 has a heap-based buffer overflow in grk::FileFormatDecompress::apply_palette_clr (called from grk::FileFormatDecompress::applyColour)
7.8
CVSS
1.2%
EPSS
No
On KEV
Description
Grok 7.6.6 through 9.2.0 has a heap-based buffer overflow in grk::FileFormatDecompress::apply_palette_clr (called from grk::FileFormatDecompress::applyColour).
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.2% · higher than 67% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
GR
Grok · Zope
7.6.6 through 9.2.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-36089
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-36089
Exploit
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=33544
Release Notes
https://github.com/GrokImageCompression/grok/releases
Third Party Advisory
https://github.com/google/oss-fuzz-vulns/blob/main/vulns/grok/OSV-2021-677.yaml