Critical severity · published Mar 3, 2022
CVE-2021-3762
A directory traversal vulnerability was found in the ClairCore engine of Clair
9.8
CVSS
4.8%
EPSS
No
On KEV
Description
A directory traversal vulnerability was found in the ClairCore engine of Clair. An attacker can exploit this by supplying a crafted container image which, when scanned by Clair, allows for arbitrary file write on the filesystem, potentially allowing for remote code execution.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)4.8% · higher than 92% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CL
Clair · Redhat
0.4.6 before 0.4.8; 0.5.3 before 0.5.5 · source: NVD
QU
Quay · Redhat
3.5.6 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-3762
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-3762
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=2000795
Patch
https://github.com/quay/clair/pull/1379
Patch
https://github.com/quay/clair/pull/1380
Patch
https://github.com/quay/claircore/commit/691f2023a1720a0579e688b69a2f4bfe1f4b7821
Patch
https://github.com/quay/claircore/pull/478
Exploit
https://vulmon.com/exploitdetails?qidtp=maillist_oss_security&qid=d19fce9ede06e13dfb5630ece7f14f83