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Fencer Intel
high 7.5

CVE-2015-2059 json

The stringprep_utf8_to_ucs4 function in libin before 1.31, as used in jabberd2, allows context-dependent attackers to read system memory an…

published 11y ago modified 4mo ago also EUVD-2015-2172

cvss
7.5
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
3.2%
EPSS 3.2% chance of exploitation in 30 days, percentile 88%
public exploits
0
none known

Summary

The stringprep_utf8_to_ucs4 function in libin before 1.31, as used in jabberd2, allows context-dependent attackers to read system memory and possibly have other unspecified impact via invalid UTF-8 characters in a string, which triggers an out-of-bounds read.

Patch / fix

  • libidn Debian 14, Debian 13, Debian 12 1.31-1

debian advisories DEBIAN-CVE-2015-2059

  • libidn Ubuntu 14.04 LTS 1.28-1ubuntu2.1

ubuntu advisories UBUNTU-CVE-2015-2059

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • libidn SLES for SAP 11 SP4, SLES 11 SP4, SLE Software Development Kit 11 SP4 1.10-6.1
  • wget SLES for SAP 12 SP1, SLES 12 SP1, SLED 12 SP1 1.14-10.3
  • libidn SLES for SAP 12 SP1, SLES 12 SP1, SLED 12 SP1 +1 more 1.28-4.1

suse advisories SUSE-SU-2016:2291-1SUSE-SU-2016:2226-1SUSE-SU-2016:2079-1

Is CVE-2015-2059 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-2015-2059 updated cvss 2.6

libidn: out-of-bounds read with stringprep on invalid UTF-8

  • Red Hat Enterprise Linux 5 libidn Red Hat Enterprise Linux 6 libidn Red Hat Enterprise Linux 7 libidn, emacs-libidn
    affected: no fix planned “Will not fix”

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

3.19% chance of exploitation in the next 30 days, higher than 88% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

Classification

Weakness
  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

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.