CVE-2020-25467 json
A null pointer dereference was discovered lzo_decompress_buf in stream.c in Irzip 0.621 which allows an attacker to cause a denial of servi…
published 2021-06-10 5 y ago modified 2026-06-17 4 mo ago also EUVD-2020-18153
- cvss
- 5.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.0%
- EPSS 1.0% chance of exploitation in 30 days, percentile 61%
- public exploits
- 0
- none known
Summary
A null pointer dereference was discovered lzo_decompress_buf in stream.c in Irzip 0.621 which allows an attacker to cause a denial of service (DOS) via a crafted compressed file.
Patch / fix
- lrzip Debian 14, Debian 13, Debian 12 0.640-1
debian advisories DEBIAN-CVE-2020-25467
- lrzip Ubuntu 18.04 LTS 0.631-1+deb9u3build0.18.04.1
- lrzip Ubuntu 20.04 LTS 0.631+git180528-1+deb10u1build0.20.04.1
- lrzip Ubuntu Pro 14.04 LTS 0.616-1ubuntu0.1~esm2
- lrzip Ubuntu Pro 16.04 LTS 0.621-1ubuntu0.1~esm2
ubuntu advisories UBUNTU-CVE-2020-25467
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
- lrzip Alpine 3.24, Alpine 3.23, Alpine 3.22 +5 more 0.640-r0
alpine advisories ALPINE-CVE-2020-25467
Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0
- github.com/ckolivas/lrzip/issues/163 advisory
Exploit prediction
0.96% chance of exploitation in the next 30 days, higher than 61% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/ckolivas/lrzip/issues/163 referenced PoC, tagged "exploit" by a source, unverified
- bugs.launchpad.net https://bugs.launchpad.net/ubuntu/+source/lrzip/+bug/1893641 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 5.5 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H |
| NVD | 2.0 | 4.3 | AV:N/AC:M/Au:N/C:N/I:N/A:P |
Classification
- Weakness
-
- CWE-476 NULL Pointer Dereference
References
-
github.com
/ckolivas/lrzip/issues/163
exploit, issue-tracking, patch, third-party-advisory
-
bugs.launchpad.net
/ubuntu/+source/lrzip/+bug/1893641
exploit, issue-tracking, third-party-advisory
-
lists.debian.org
/debian-lts-announce/2022/04/msg00012.html
mailing-list, third-party-advisory
Sources
- CVE List CVE-2020-25467
- NVD CVE-2020-25467
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.