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Fencer Vulns
critical 9.8

CVE-2017-12858 json

Double free vulnerability in the _zip_dirent_read function in zip_dirent.c in libzip allows attackers to have unspecified impact via unknow…

published 2017-08-23 9 y ago modified 2026-06-17 4 mo ago also EUVD-2017-4393

cvss
9.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
3.3%
EPSS 3.3% chance of exploitation in 30 days, percentile 88%
public exploits
0
none known

Summary

Double free vulnerability in the _zip_dirent_read function in zip_dirent.c in libzip allows attackers to have unspecified impact via unknown vectors.

Patch / fix

  • libzip openSUSE Tumbleweed 1.8.0-1.2

opensuse advisories openSUSE-SU-2024:11018-1

  • libzip Alpine 3.6 1.2.0-r2

alpine advisories ALPINE-CVE-2017-12858

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • libzip Arch Linux 1.3.0-1

arch linux advisories AVG-390

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-2017-12858 updated cvss 3.3

libzip: Double free in _zip_dirent_read function in zip_dirent.c

  • Red Hat Enterprise Linux 5 php53 Red Hat Enterprise Linux 6 php, libzip, php-gd, php-cli, php-dba, php-fpm, +21 more Red Hat Enterprise Linux 7 libzip Red Hat Software Collections rh-php56-php, rh-php70-php, rh-php71-php, rh-php72-php, rh-php73-php, rh-php56-php-gd, +136 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

3.29% chance of exploitation in the next 30 days, higher than 88% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/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.