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Fencer Intel
high 8.1

CVE-2017-7436 json

libzypp accepts unsigned packages even when configured to check signatures

published 2018-03-01 8 y ago modified 2026-06-17 4 mo ago also EUVD-2017-16460

cvss
8.1
version 3.0, CNA
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

In libzypp before 20170803 it was possible to retrieve unsigned packages without a warning to the user which could lead to man in the middle or malicious servers to inject malicious RPM packages into a users system.

Patch / fix

  • SUSE libzypp 20170803
  • libzypp Debian 14, Debian 13, Debian 12 17.3.1-1

debian advisories DEBIAN-CVE-2017-7436

  • zypper SLES for SAP 12 SP3, SLES 12 SP3, SLED 12 SP3 1.13.32-21.3.2
  • libzypp SLES for SAP 12 SP3, SLES 12 SP3, SLED 12 SP3 +1 more 16.15.6-2.8.1
  • libzypp SLES for SAP 12 SP3, SLES 12 SP3, SLED 12 SP3 +1 more 16.15.3-2.3.1
  • yast2-pkg-bindings SLES for SAP 12 SP3, SLES 12 SP3, SLED 12 SP3 3.2.4-2.3.1
  • zypper SLES for SAP 12 SP2, SLES for Raspberry Pi 12 SP2, SLES 12 SP2 +1 more 1.13.30-18.13.3
  • libzypp SLES for SAP 12 SP2, SLES for Raspberry Pi 12 SP2, SLES 12 SP2 +2 more 16.15.2-27.21.1
  • zypper SLES 12-LTSS 1.11.70-2.69.2
  • libzypp SLES 12-LTSS 14.45.17-2.82.1

suse advisories SUSE-SU-2018:2688-1SUSE-SU-2018:2555-1SUSE-SU-2017:2344-1SUSE-SU-2017:2264-1SUSE-SU-2017:2040-1

  • zypper openSUSE Tumbleweed 1.14.49-1.2

opensuse advisories openSUSE-SU-2024:11545-1

Exploit prediction

1.82% chance of exploitation in the next 30 days, higher than 78% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CNA 3.0 8.1 CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 3.0 8.1 CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 9.3 AV:N/AC:M/Au:N/C:C/I:C/A:C

Affected products

  • SUSE libzypp

Classification

Weakness
  • CWE-20 Improper Input Validation

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.