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Fencer Intel
medium 6.5

CVE-2021-44568 json

Two heap-overflow vulnerabilities exist in openSUSE/libsolv libsolv through 13 Dec 2020 in the decisionmap variable via the resolve_depende…

published 4y ago modified 4mo ago also EUVD-2021-31392

cvss
6.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.8%
EPSS 1.8% chance of exploitation in 30 days, percentile 78%
public exploits
0
none known

Summary

Two heap-overflow vulnerabilities exist in openSUSE/libsolv libsolv through 13 Dec 2020 in the decisionmap variable via the resolve_dependencies function at src/solver.c (line 1940 & line 1995), which could cause a remote Denial of Service.

Patch / fix

  • opensuse libsolv 0.7.17
  • libsolv Debian 14, Debian 13, Debian 12 0.7.17-1

debian advisories DEBIAN-CVE-2021-44568

  • foreman satellite utils 6.11, satellite capsule 6.11, satellite 6.11 3.1.1.21-2.el7sat
  • foreman satellite utils 6.11, satellite capsule 6.11, satellite 6.11 3.1.1.21-2.el8sat
  • libsolv satellite capsule 6.11, satellite 6.11 0.7.22-1.el7pc
  • libsolv satellite capsule 6.11, satellite 6.11 0.7.22-1.el8pc
  • candlepin satellite 6.11 4.1.13-1.el7sat
  • candlepin satellite 6.11 4.1.13-1.el8sat
  • satellite satellite utils 6.11, satellite capsule 6.11, satellite 6.11 6.11.0-2.el7sat
  • satellite satellite utils 6.11, satellite capsule 6.11, satellite 6.11 6.11.0-2.el8sat

red hat advisories RHSA-2022:5498

  • libdb Rocky Linux 8 5.3.28-42.el8_4

rocky linux advisories RLSA-2022:5498

Is CVE-2021-44568 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2021-44568 updated cvss 6.3

libsolv: heap-overflows in resolve_dependencies function

  • Red Hat Enterprise Linux 7 libsolv, libsolv-demo, python2-solv, libsolv-tools
    affected: no fix planned “Out of support scope”
  • Red Hat Update Infrastructure 3 for Cloud Providers libsolv
    affected: no fix planned “Will not fix”
  • Red Hat Satellite 6.11 for RHEL 7 libsolv 0.7.22-1.el7pc Red Hat Satellite 6.11 for RHEL 8 libsolv 0.7.22-1.el8pc
    fixed: vendor fix RHSA-2022:5498
  • Red Hat Enterprise Linux 8 libsolv, python3-solv, libsolv-tools Red Hat Enterprise Linux 9 libsolv, python3-solv, libsolv-tools Red Hat Satellite 6.11 for RHEL 7 tfm 7.0-1.el7sat, gofer 2.12.5-7.el7sat, katello 4.3.0-3.el7sat, libcomps 0.1.18-1.el7pc, libsolv0 0.6.34-4.el7sat, python-qpid 1.35.0-5.el7, +637 more Red Hat Satellite 6.11 for RHEL 8 libdb 5.3.28-42.el8_4, katello 4.3.0-3.el8sat, libcomps 0.1.18-1.el8pc, python-idna 3.3-1.el8pc, python-pbr 5.6.0-1.el8pc, python-qpid 1.37.0-1.el8, +628 more
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

1.79% chance of exploitation in the next 30 days, higher than 78% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • github.com https://github.com/openSUSE/libsolv/issues/425 referenced PoC, tagged "exploit" by a source, unverified
  • github.com https://github.com/yangjiageng/PoC/blob/master/libsolv-PoCs/resolve_dependencies-1940 referenced PoC, tagged "exploit" by a source, unverified
  • github.com https://github.com/yangjiageng/PoC/blob/master/libsolv-PoCs/resolve_dependencies-1995 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:N/A:P

Classification

Weakness

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.