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Fencer Vulns
high 7.5

CVE-2019-20387 json

repodata_schema2id in repodata.c in libsolv before 0.7.6 has a heap-based buffer over-read via a last schema whose length is less than the…

published 2020-01-21 6 y ago modified 2026-06-17 4 mo ago also EUVD-2019-10939

cvss
7.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.3%
EPSS 2.3% chance of exploitation in 30 days, percentile 83%
public exploits
0
none known

Summary

repodata_schema2id in repodata.c in libsolv before 0.7.6 has a heap-based buffer over-read via a last schema whose length is less than the length of the input schema.

Patch / fix

  • opensuse libsolv 0.7.6
  • libsolv Debian 14, Debian 13, Debian 12 0.6.36-2

debian advisories DEBIAN-CVE-2019-20387

  • libsolv RHEL 8 0.7.11-1.el8
  • python3-solv RHEL 8 0.7.11-1.el8

red hat advisories RHSA-2020:4508

  • libsolv SLES for SAP 12 SP5, SLES for SAP 12 SP4, SLES for SAP 12 SP3 +10 more 0.6.37-2.33.1
  • libzypp SLES for SAP 12 SP5, SLES for SAP 12 SP4, SLES for SAP 12 SP3 +10 more 16.21.4-2.51.1
  • libsolv SLES 12 SP2-BCL 0.6.37-2.27.24.1
  • libzypp SLES 12 SP2-BCL 16.21.4-27.75.1

suse advisories SUSE-SU-2021:2180-1SUSE-SU-2021:2145-1

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-2019-20387 updated cvss 7.5

libsolv: out-of-bounds read in repodata_schema2id in repodata.c

  • Red Hat Enterprise Linux 7 libsolv, libsolv-demo, python2-solv, libsolv-tools Red Hat Update Infrastructure 3 for Cloud Providers libsolv
    affected: no fix planned “Will not fix”
  • Red Hat Enterprise Linux BaseOS (v. 8) libsolv 0.7.11-1.el8, python3-solv 0.7.11-1.el8
    fixed: vendor fix RHSA-2020:4508
  • Red Hat Satellite 6 libsolv, python2-solv, python3-solv
    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

2.34% chance of exploitation in the next 30 days, higher than 83% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P

Classification

Weakness

References

Sources

Fencer Vulns 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.