CVE-2016-7977

Ghostscript vulnerability

CVSS

5.5

EPSS

4.6%

EPSS pct

91th

Exploited

No known

Ghostscript before 9.21 might allow remote attackers to bypass the SAFER mode protection mechanism and consequently read arbitrary files via the use of the .libfile operator in a crafted postscript document.

Affected vendor

Artifex

Affected product

Ghostscript

CVSS vector

CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

Weakness type (CWE)

CWE-200 — Exposure of Sensitive Information

Published

2017-05-23

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable with local access, low attack complexity, requiring no privileges, user interaction. Successful exploitation leads to high impact to confidentiality.

Its EPSS score of 4.6% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 91% of all scored CVEs.

Check your external exposure to CVE-2016-7977

Confirm whether Artifex Ghostscript is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2016-7977.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2016-7977

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2016-7977 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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