CVE-2020-8955: debian debian_linux Classic Buffer Overflow
CVSS: 9.8v3.1CriticalModified
AliasesMGASA-2020-0122openSUSE-SU-2020:0248-1UBUNTU-CVE-2020-8955DEBIAN-CVE-2020-8955
Published 12-02-2020Last modified 04-08-2024
Vulnerability summary
CVE-2020-8955 is a critical (CVSS 9.8) Classic Buffer Overflow vulnerability in debian debian_linux. EPSS estimates a 3.45% chance of exploitation in the next 30 days, higher than 88.9% of scored vulnerabilities.
CVSS score
9.8/10
010
Critical · v3.1 (NVD)EPSS score
3.45%
0%100%
Low · -0.24 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 4 · Related 2Timeline
- 12-02-2020PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
irc_mode_channel_update in plugins/irc/irc-mode.c in WeeChat through 2.7 allows remote attackers to cause a denial of service (buffer overflow and application crash) or possibly have unspecified other impact via a malformed IRC message 324 (channel mode).
CVSS metrics
4 scores · 3 sources · 2 versionsCritical 9.8Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HSourcesAll 3 agree
- OSV · UbuntuEcosystem advisory · calculated9.8CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated9.8CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
High 7.5Preferred score · NVD (NIST)
AV:N/AC:L/Au:N/C:P/I:P/A:PSourcesSingle source
EPSS trend
Probability
3.45%
Chance of exploitation in the next 30 days
Percentile
89%
Versus all other CVEs
30-day change
-0.24 pp
From 3.68% on 21-09-2026
21-09-202621-10-2026
EPSS score3.45%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Opensuse3 products
- backports_sle15.0 | 15.0:sp1
- leapEOL15.1
- weechat&distro=openSUSE Leap 15.1< 2.1-bp151.4.3.1
Debian2 products
- weechat< 2.7.1-1
- debian_linuxEOL8.0 | 9.0
Suse2 products
- weechat&distro=SUSE Package Hub 15< 2.1-bp151.4.3.1
- weechat&distro=SUSE Package Hub 15 SP1< 2.1-bp151.4.3.1
Fedoraproject1 product
- fedoraEOL30 | 31 | 32
Mageia1 product
- weechat< 2.4-2.1.mga7
Ubuntu1 product
- weechat< 1.4-2ubuntu0.1+esm1 | < 1.9.1-1ubuntu1+esm1
Weechat1 product
- weechat≥ 0.3.8, ≤ 2.7
7 vendors · 11 products
References
19 links- github.com/weechat/weechat/commit/6f4f147d8e86adf9ad34a8ffd7e7f1f23a7e74daX Refsource MISCREPORTPatchThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2020-02/msg00032.htmlVendor AdvisoryX Refsource SUSEMailing ListThird Party Advisory
lists.debian.org/debian-lts-announce/2020/03/msg00031.htmlMailing ListX Refsource MLISTThird Party Advisory- lists.debian.org/debian-lts-announce/2021/09/msg00018.htmlMailing ListX Refsource MLISTThird Party Advisory
Show all 19 references
- lists.opensuse.org/archives/…Advisory