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Fencer Vulns
medium 5.3

CVE-2023-2617 json

OpenCV wechat_qrcode Module decoded_bit_stream_parser.cpp decodeByteSegment null pointer dereference

published 2023-05-10 3 y ago modified 2026-07-25 3 mo ago also EUVD-2023-34088 , JLSEC-2026-567

cvss
5.3
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.4%
EPSS 1.4% chance of exploitation in 30 days, percentile 71%
public exploits
0
none known

Summary

A vulnerability classified as problematic was found in OpenCV wechat_qrcode Module up to 4.7.0. Affected by this vulnerability is the function DecodedBitStreamParser::decodeByteSegment of the file qrcode/decoder/decoded_bit_stream_parser.cpp. The manipulation leads to null pointer dereference. The attack can be launched remotely. The exploit has been disclosed to the public and may be used. It is recommended to apply a patch to fix this issue. The associated identifier of this vulnerability is VDB-228547.

Patch / fix

  • julia OpenCV_jll 4.10.0+0
  • opencv Debian 14, Debian 13, Debian 12 4.6.0+dfsg-12

debian advisories DEBIAN-CVE-2023-2617

  • opencv Ubuntu Pro 22.04 LTS 4.5.4+dfsg-9ubuntu4+esm1

ubuntu advisories UBUNTU-CVE-2023-2617

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2023-2617 updated cvss 7.5

OpenCV: NULL pointer dereference in wechat_qrcode module

  • Red Hat JBoss Enterprise Application Platform 6 org.keycloak-keycloak-parent org.keycloak-keycloak-parent
    affected: no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 6 opencv, opencv-python Red Hat Enterprise Linux 7 opencv, opencv-core, opencv-python Red Hat Enterprise Linux 8 opencv, opencv-core, opencv-contrib, python3-opencv Red Hat Single Sign-On 7 org.keycloak-keycloak-parent org.keycloak-keycloak-parent
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
Proof of concept is public
Automatable
yes
Technical impact
partial
Assessed
21 mo ago

Exploit prediction

1.36% chance of exploitation in the next 30 days, higher than 71% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/opencv/opencv_contrib/pull/3480 referenced PoC, tagged "exploit" by a source, unverified
  • gist.github.com https://gist.github.com/GZTimeWalker/3ca70a8af2f5830711e9cccc73fb5270 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CNA 3.0 5.3 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CNA 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
OSV 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected packages

ecosystem package affected fixed in
julia OpenCV_jll
<4.10.0+0
4.10.0+0

Affected products

  • OpenCV wechat_qrcode Module

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.