CVE-2018-11645 — psi/zfile

psi/zfile.c in Artifex Ghostscript before 9.21rc1 permits the status command even if -dSAFER is used, which might allow remote attackers to determine the existence and size of arbitrary files, a similar issue to CVE-2016-7977.

01What is this vulnerability?

psi/zfile.c in Artifex Ghostscript before 9.21rc1 permits the status command even if -dSAFER is used, which might allow remote attackers to determine the existence and size of arbitrary files, a similar issue to CVE-2016-7977.

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: 2018-06-01T12:00:00.000Z
• Last modified: 2024-08-05T08:17:08.635Z

09References

• usn.ubuntu.com — https://usn.ubuntu.com/3768-1/
• git.ghostscript.com — http://git.ghostscript.com/?p=ghostpdl.git%3Ba=commit%3Bh=b60d50b7567369ad856ceb…
• bugs.ghostscript.com — https://bugs.ghostscript.com/show_bug.cgi?id=697193
• www.debian.org — https://www.debian.org/security/2018/dsa-4336
• lists.debian.org — https://lists.debian.org/debian-lts-announce/2018/09/msg00015.html
• access.redhat.com — https://access.redhat.com/errata/RHSA-2019:2281