7.1

CVE-2019-12779: clusterlabs libqb Link Following

CVSS: 7.1v3.0HighModified
AliasesMGASA-2020-0048SUSE-SU-2019:1791-1SUSE-SU-2019:1806-1
Published 07-06-2019Last modified 04-08-2024
Open JSON

Vulnerability summary

CVE-2019-12779 is a high (CVSS 7.1) Link Following vulnerability in clusterlabs libqb. EPSS estimates a 0.66% chance of exploitation in the next 30 days, higher than 50.3% of scored vulnerabilities. 2 public exploits are recorded.

Overall risk
39/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.1/10
010
High · v3.0 (NVD)
EPSS score
0.66%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits2github, reference

Advisory lineage

Upstream 0 · Downstream 0 · Duplicates 1
CVE-2019-10148

Timeline

  1. 07-06-2019
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

Description

libqb before 1.0.5 allows local users to overwrite arbitrary files via a symlink attack, because it uses predictable filenames (under /dev/shm and /tmp) without O_EXCL.

CVSS metrics

5 scores · 4 sources · 2 versions

EPSS trend

Probability

0.66%

Chance of exploitation in the next 30 days

Percentile

50%

Versus all other CVEs

30-day change

0.00 pp

From 0.66% on 18-09-2026

18-09-202618-10-2026
EPSS score
0.66%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

2 found
  • githubUnverified

    Libqb

    Maturity: poc

  • referenceUnverified

    Exploit Reference (bugzilla.redhat.com)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Suse9 products
  • libdlm&distro=SUSE Linux Enterprise High Availability Extension 12 SP3< 4.0.7-3.3.2
  • libdlm&distro=SUSE Linux Enterprise High Availability Extension 12 SP4< 4.0.7-3.3.2
  • libdlm&distro=SUSE Linux Enterprise Software Development Kit 12 SP4< 4.0.7-3.3.2
  • libqb&distro=SUSE Linux Enterprise High Availability Extension 12 SP3< 1.0.3+20171226.6d62b64-4.3.1
  • libqb&distro=SUSE Linux Enterprise High Availability Extension 12 SP4< 1.0.3+20171226.6d62b64-4.3.1
Redhat5 products
  • libqb< 0:1.0.1-9.el7 | < 0:1.0.3-10.el8
  • libqb-debuginfo< 0:1.0.1-9.el7 | < 0:1.0.3-10.el8
  • libqb-debugsource< 0:1.0.3-10.el8
  • libqb-devel< 0:1.0.1-9.el7 | < 0:1.0.3-10.el8
  • libqb-tests-debuginfo< 0:1.0.3-10.el8
Opensuse2 products
  • libqb&distro=openSUSE Leap 15.0< 1.0.3+20171226.6d62b64-lp150.2.3.1
  • libqb&distro=openSUSE Leap 15.1< 1.0.3+20190326.a521604-lp151.2.3.1
Clusterlabs1 product
Debian1 product
  • libqb< 1.0.4-1
Mageia1 product
  • libqb< 1.0.5-1.mga7
Ubuntu1 product
  • libqbAll versions (No fix recorded)

7 vendors · 20 products

References

36 links
Show all 36 references