CVE-2018-16509

unknown

Published — · Modified —

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CVSS v3

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CVSS v4 NEW

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not yet in upstream

VIR risk

1.0

Description

An issue was discovered in Artifex Ghostscript before 9.24. Incorrect "restoration of privilege" checking during handling of /invalidaccess exceptions could be used by attackers able to supply crafted PostScript to execute code using the "pipe" instruction.

Predictions

Exploit likelihood

55%

Patch ETA

—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

Exploits

Public proof-of-concept code below. AS-IS, for defenders and authorised testing only.

Metasploit modules

exploit_multi/fileformat/ghostscript_failed_restore rank 600

Ghostscript Failed Restore Command Execution

Source code queued for fetch — refresh in a moment.

OS impact

OS	Version	Status	Fixed in
sles		affected
debian	bookworm	fixed	`9.25~dfsg-1`
debian	bullseye	fixed	`9.25~dfsg-1`
debian	forky	fixed	`9.25~dfsg-1`
debian	sid	fixed	`9.25~dfsg-1`
debian	trixie	fixed	`9.25~dfsg-1`

References

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.