CVE-2020-25866 — NULL Pointer Dereference in Wireshark

CWE-476 — NULL Pointer Dereference8 documents7 sources
Severity
7.5HIGHNVD
EPSS
1.3%
top 20.13%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
4
WiresharkFedoraproject FedoraOpensuse Leap+1 more
Timeline
PublishedOct 6
Latest updateMay 24

Description

In Wireshark 3.2.0 to 3.2.6 and 3.0.0 to 3.0.13, the BLIP protocol dissector has a NULL pointer dereference because a buffer was sized for compressed (not uncompressed) messages. This was addressed in epan/dissectors/packet-blip.c by allowing reasonable compression ratios and rejecting ZIP bombs.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HExploitability: 3.9 | Impact: 3.6

Affected Packages4 packages

▶Debianwireshark/wireshark< 3.2.7-1+3
▶NVDwireshark/wireshark3.0.0 — 3.0.13+1
▶NVDopensuse/leap15.1, 15.2+1

Also affects: Fedora 31, 32, 33

Patches

Patch: gitlab.com ↗Patch: www.oracle.com ↗Patch: gitlab.com ↗

🔴Vulnerability Details

3
GHSA
GHSA-j5p6-gc45-8fh8: In Wireshark 3↗2022-05-24
▶
CVEList
CVE-2020-25866: In Wireshark 3↗2020-10-06
▶
OSV
CVE-2020-25866: In Wireshark 3↗2020-10-06
▶

📋Vendor Advisories

2
Red Hat
wireshark: BLIP dissector crash (wnpa-sec-2020-13)↗2020-09-23
▶
Debian
CVE-2020-25866: wireshark - In Wireshark 3.2.0 to 3.2.6 and 3.0.0 to 3.0.13, the BLIP protocol dissector has...↗2020
▶

💬Community

2
Bugzilla
CVE-2020-25866 wireshark: BLIP dissector crash (wnpa-sec-2020-13)↗2020-10-07
▶
Bugzilla
CVE-2020-25866 wireshark: BLIP dissector crash (wnpa-sec-2020-13) [fedora-all]↗2020-10-07
▶
CVE-2020-25866 — NULL Pointer Dereference in Wireshark | cvebase