Home/CVE/Open Container Initiative umoci before 0.4.7 allows attackers to overwrite arbitrary host paths via a crafted image that
CVE

CVE-2021-29136

Open Container Initiative umoci before 0.4.7 allows attackers to overwrite arbitrary host paths via a crafted image that

Open Container Initiative umoci before 0.4.7 allows attackers to overwrite arbitrary host paths via a crafted image that causes symlink traversal when "umoci unpack" or "umoci raw unpack" is used.

MEDIUM · CVSS 5.5 EPSS 0.00146
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-20Improper Input Validation
▤

Affected Products & Versions

2
linuxfoundation umoci< 0.4.7
sylabs singularity< 3.7.3
▤

Affected Packages

1
Language-ecosystem packages (from OSV) tied to this CVE, with the version that fixes it - the dependency-level detail NVD doesn’t carry.
Go github.com/opencontainers/umoci MODERATE fixed in 0.4.7
▣

Scoring & Timeline

5.5
MEDIUM · CVSS v3.1 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD06 Apr 2021 · 04:15 PM
CVSS VectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
⚑

Vendor Advisories

9
suse-csafopenSUSE-SU-2024:11384-1
suse-csafopenSUSE-SU-2024:11482-1
suse-csafopenSUSE-SU-2021:1863-1
suse-csafSUSE-SU-2021:1863-2
suse-csafopenSUSE-SU-2021:0846-1
🔗

References & Sources

3
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://www.openwall.com/lists/oss-security/2021/04/06/2Mailing ListPatchThird Party Advisory
https://github.com/opencontainers/umoci/commit/d9efc31daf2206f7d3fdb839863cf7a576a2eb57PatchThird Party Advisory
https://github.com/opencontainers/umoci/security/advisories/GHSA-9m95-8hx6-7p9vThird Party Advisory
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