5.5

CVE-2021-29136: linuxfoundation umoci Improper Input Validation

Modified
AliasesSUSE-SU-2021:1116-1SUSE-SU-2021:1863-1SUSE-SU-2021:1863-2
Published 06-04-2021Last modified 03-08-2024

Vulnerability summary

CVE-2021-29136 is a medium (CVSS 5.5) Improper Input Validation vulnerability in linuxfoundation umoci. EPSS estimates a 0.34% chance of exploitation in the next 30 days, higher than 27.9% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
5.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.34%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 2 · Related 1
MGASA-2022-0006OPENSUSE-SU-2024:11384-1

Timeline

  1. 06-04-2021
    PublishedVulnerability first disclosed.
  2. 03-08-2024
    Last modifiedVulnerability information updated.

Description

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.

CVSS metrics

6 scores · 5 sources · 2 versions

EPSS trend

Probability

0.34%

Chance of exploitation in the next 30 days

Percentile

28%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.34% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Suse13 products
  • singularity&distro=SUSE Package Hub 15 SP2< 3.7.3-bp152.2.19.3
  • umoci&distro=SUSE Enterprise Storage 6< 0.4.6-3.9.1 | < 0.4.7-3.12.1
  • umoci&distro=SUSE Linux Enterprise High Performance Computing 15 SP1-ESPOS< 0.4.6-3.9.1 | < 0.4.7-3.12.1
  • umoci&distro=SUSE Linux Enterprise High Performance Computing 15 SP1-LTSS< 0.4.6-3.9.1 | < 0.4.7-3.12.1
  • umoci&distro=SUSE Linux Enterprise Module for Basesystem 15 SP3< 0.4.7-3.12.1
Opensuse3 products
  • umoci&distro=openSUSE Leap 15.2< 0.4.6-lp152.2.3.1 | < 0.4.7-lp152.2.6.1
  • umoci&distro=openSUSE Leap 15.3< 0.4.7-3.12.1
  • umoci&distro=openSUSE Tumbleweed< 0.4.7-2.3
Alpine2 products
  • singularity< 3.7.3-r0
  • umoci< 0.4.7-r0
Debian1 product
  • umoci< 0.4.7+ds-1
Github.com/opencontainers1 product
  • umoci< 0.4.7
Linuxfoundation1 product
Sylabs1 product
Ubuntu1 product
  • umociAll versions (No fix recorded)

8 vendors · 23 products

References

17 links
Show all 17 references