7.5

CVE-2021-29499: sylabs sif Use of Insufficiently Random Values

CVSS: 7.5v3.1HighModified
AliasesUBUNTU-CVE-2021-29499DEBIAN-CVE-2021-29499GHSA-4gh8-x3vv-phhg
Published 07-05-2021Last modified 03-08-2024
Open JSON

Vulnerability summary

CVE-2021-29499 is a high (CVSS 7.5) Use of Insufficiently Random Values vulnerability in sylabs sif. EPSS estimates a 0.96% chance of exploitation in the next 30 days, higher than 60.8% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
40/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (CVE.org)
EPSS score
0.96%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1github

Timeline

  1. 07-05-2021
    PublishedVulnerability first disclosed.
  2. 03-08-2024
    Last modifiedVulnerability information updated.

Description

SIF is an open source implementation of the Singularity Container Image Format. The `siftool new` command and func siftool.New() produce predictable UUID identifiers due to insecure randomness in the version of the `github.com/satori/go.uuid` module used as a dependency. A patch is available in version >= v1.2.3 of the module. Users are encouraged to upgrade. As a workaround, users passing CreateInfo struct should ensure the `ID` field is generated using a version of `github.com/satori/go.uuid` that is not vulnerable to this issue.

CVSS metrics

6 scores · 5 sources · 2 versions

EPSS trend

Probability

0.96%

Chance of exploitation in the next 30 days

Percentile

61%

Versus all other CVEs

30-day change

0.00 pp

From 0.96% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.96%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • githubUnverified

    Sif

    Maturity: poc

Weaknesses

CWE · root cause

Affected systems

Sylabs2 products
Ubuntu2 products
  • golang-github-sylabs-sifAll versions (No fix recorded)
  • singularity-containerAll versions (No fix recorded)
Debian1 product
  • golang-github-sylabs-sif< 2.3.1-2
Github.com/sylabs1 product
  • sif< 1.2.3

4 vendors · 6 products

References

8 links