CVE-2018-20847

Severity: high (CVSS 8.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2019-06-26 · updated 2026-06-17
Weakness: CWE-190

Description

An improper computation of p_tx0, p_tx1, p_ty0 and p_ty1 in the function opj_get_encoding_parameters in openjp2/pi.c in OpenJPEG through 2.3.0 can lead to an integer overflow.

Affected products

Debian Linux: 8.0
uclouvain openjpeg: through 2.3.0

References

http://www.securityfocus.com/bid/108921
https://github.com/uclouvain/openjpeg/commit/5d00b719f4b93b1445e6fb4c766b9a9883c57949
https://github.com/uclouvain/openjpeg/issues/431
https://github.com/uclouvain/openjpeg/pull/1168/commits/c58df149900df862806d0e892859b41115875845
https://lists.debian.org/debian-lts-announce/2019/07/msg00010.html
http://www.securityfocus.com/bid/108921
https://github.com/uclouvain/openjpeg/commit/5d00b719f4b93b1445e6fb4c766b9a9883c57949
https://github.com/uclouvain/openjpeg/issues/431
https://github.com/uclouvain/openjpeg/pull/1168/commits/c58df149900df862806d0e892859b41115875845
https://lists.debian.org/debian-lts-announce/2019/07/msg00010.html

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