CVE-2019-17582 — A use-after-free in the _zip_dirent_read function of zip_dirent

A use-after-free in the _zip_dirent_read function of zip_dirent.c in libzip 1.2.0 allows attackers to have an unspecified impact by attempting to unzip a malformed ZIP archive. NOTE: the discoverer states "This use-after-free is triggered prior to the double free reported in

01What is this vulnerability?

A use-after-free in the _zip_dirent_read function of zip_dirent.c in libzip 1.2.0 allows attackers to have an unspecified impact by attempting to unzip a malformed ZIP archive. NOTE: the discoverer states "This use-after-free is triggered prior to the double free reported in CVE-2017-12858."

02Affected products

Vendor	Product	Versions
n	a / n/a	n/a

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

08Timeline

• Published: 2021-02-09T18:07:57.000Z
• Last modified: 2024-08-05T01:47:13.117Z

09References

• libzip.org — https://libzip.org/libzip-discuss/
• github.com — https://github.com/nih-at/libzip/issues/5
• github.com — https://github.com/nih-at/libzip/commit/2217022b7d1142738656d891e00b3d2d9179b796