CVE-2017-7976: Artifex jbig2dec 0.13 allows out-of-bounds writes and reads because of an integer overflow in the jbig2_image_

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HIGH 7.1DOWNGRADE

CVE-2017-7976 is a high-severity flaw (CVSS 7.1) affecting jbig2dec. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Artifex jbig2dec 0.13 allows out-of-bounds writes and reads because of an integer overflow in the jbig2_image_compose function in jbig2_image.c during operations on a crafted .jb2 file, leading to a denial of service (application crash) or disclosure of sensitive information from process memory.

Why this priority

High severity

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.1 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	1.1% (top 35%)
CISA exploited list	No
Weakness	CWE-190
Published	2017-04-19
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: artifex

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2017-04-19 17:59 UTCPublished CVE record published
2026-06-17 01:25 UTCUpdated Record last modified

artifex jbig2dec DOWNGRADE

Affected: 0.13

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.13

1. Check installed version

apt-cache policy jbig2dec || rpm -q jbig2dec || jbig2dec --version

2. No fixed release: DOWNGRADE to a release before 0.13 (Debian / Ubuntu)

apt-cache madison jbig2dec sudo apt install jbig2dec=<VERSION_BEFORE_0.13> sudo apt-mark hold jbig2dec

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list jbig2dec sudo dnf downgrade jbig2dec-<VERSION_BEFORE_0.13> sudo dnf versionlock add jbig2dec

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2017-7976?

jbig2dec: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2017-7976 being exploited?

CVE-2017-7976 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2017-7976 affect?

CVE-2017-7976 affects jbig2dec. Severity is high (CVSS 7.1). Artifex jbig2dec 0.13 allows out-of-bounds writes and reads because of an integer overflow in the jbig2_image_compose function in jbig2_image.c during operations on a crafted .jb2 file, leading to a denial of service (application crash) or

How urgent is CVE-2017-7976?

Priority 41/100. High severity

Related CVEs

CVE-2023-46361 MEDIUM 6.5 DOWNGRADE Artifex Software jbig2dec v0.20 was discovered to contain a SEGV vulnerability via jbig2_error at /jbig2dec/jb
CVE-2020-12268 CRITICAL 9.8 UPGRADE MITIGATE jbig2_image_compose in jbig2_image.c in Artifex jbig2dec before 0.18 has a heap-based buffer overflow.
CVE-2017-9216 MEDIUM 6.5 DOWNGRADE DOWNGRADE libjbig2dec.a in Artifex jbig2dec 0.13, as used in MuPDF and Ghostscript, has a NULL pointer dereference in th
CVE-2017-7975 HIGH 7.8 DOWNGRADE Artifex jbig2dec 0.13, as used in Ghostscript, allows out-of-bounds writes because of an integer overflow in t
CVE-2017-7885 HIGH 7.1 DOWNGRADE Artifex jbig2dec 0.13 has a heap-based buffer over-read leading to denial of service (application crash) or di

References

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