CVE & CISA-KEV Catalog

CVE-2020-9760

CRITICALEPSS 80th pctl

9.8

CVSS v3

Description

An issue was discovered in WeeChat before 2.7.1 (0.3.4 to 2.7 are affected). When a new IRC message 005 is received with longer nick prefixes, a buffer overflow and possibly a crash can happen when a new mode is set for a nick.

CWE-120Classic Buffer Overflow

How to fix

Remediation Available

weechatDebian

Fixed in:2.7.1-1CVE-2020-9760

Fixed in:2.7.1-1CVE-2020-9760

Fixed in:2.7.1-1CVE-2020-9760

Fixed in:2.7.1-1CVE-2020-9760

weechatUbuntu

Fixed in:1.4-2ubuntu0.1+esm1USN-5258-1

Fixed in:1.9.1-1ubuntu1+esm1USN-5258-1

Fixed in:2.8-1ubuntu0.1~esm1USN-5258-1

weechat-coreUbuntu

Fixed in:1.4-2ubuntu0.1+esm1USN-5258-1

Fixed in:1.9.1-1ubuntu1+esm1USN-5258-1

Fixed in:2.8-1ubuntu0.1~esm1USN-5258-1

weechat-cursesUbuntu

Fixed in:1.4-2ubuntu0.1+esm1USN-5258-1

Fixed in:1.9.1-1ubuntu1+esm1USN-5258-1

weechat-guileUbuntu

Fixed in:2.8-1ubuntu0.1~esm1USN-5258-1

weechat-headlessUbuntu

Fixed in:2.8-1ubuntu0.1~esm1USN-5258-1

weechat-luaUbuntu

Fixed in:2.8-1ubuntu0.1~esm1USN-5258-1

weechat-perlUbuntu

Fixed in:2.8-1ubuntu0.1~esm1USN-5258-1

weechat-phpUbuntu

Fixed in:2.8-1ubuntu0.1~esm1USN-5258-1

weechat-pluginsUbuntu

Fixed in:1.4-2ubuntu0.1+esm1USN-5258-1

Fixed in:1.9.1-1ubuntu1+esm1USN-5258-1

Fixed in:2.8-1ubuntu0.1~esm1USN-5258-1

weechat-pythonUbuntu

Fixed in:2.8-1ubuntu0.1~esm1USN-5258-1

weechat-rubyUbuntu

Fixed in:2.8-1ubuntu0.1~esm1USN-5258-1

weechat-tclUbuntu

Fixed in:2.8-1ubuntu0.1~esm1USN-5258-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploit Intelligence

2.19%probability of exploitation in 30 days

80thpercentile

Elevated risk: more likely to be exploited than 80% of all known CVEs.

References

Patch1

github.com

Vendor Advisory1

weechat.org

Third-Party Advisory3

Related Vulnerabilities

Other CWE-120 (Classic Buffer Overflow) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2014-0195	Medium	6.8	100%	-	Fix
CVE-2017-7269	Critical	9.8	100%	KEV	-
CVE-2019-11043	High	8.7	99%	KEV + Ransom	Fix
CVE-2011-4862	High	10.0	95%	-	Fix
CVE-2007-5659	High	7.8	94%	KEV	Fix
CVE-2022-3786	High	7.5	91%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.