High severity8.8NVD Advisory· Published Nov 8, 2021· Updated Jun 17, 2026
CVE-2021-42072
CVE-2021-42072
Description
An issue was discovered in Barrier before 2.4.0. The barriers component (aka the server-side implementation of Barrier) does not sufficiently verify the identify of connecting clients. Clients can thus exploit weaknesses in the provided protocol to cause denial-of-service or stage further attacks that could lead to information leaks or integrity corruption.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
7- Barrier/Barrierdescription
- osv-coords4 versionspkg:rpm/opensuse/barrier&distro=openSUSE%20Leap%2015.2pkg:rpm/opensuse/barrier&distro=openSUSE%20Leap%2015.3pkg:rpm/opensuse/barrier&distro=openSUSE%20Tumbleweedpkg:rpm/suse/barrier&distro=SUSE%20Package%20Hub%2015%20SP3
< 2.4.0-lp152.3.6.1+ 3 more
- (no CPE)range: < 2.4.0-lp152.3.6.1
- (no CPE)range: < 2.4.0-bp153.2.3.1
- (no CPE)range: < 2.4.0-1.1
- (no CPE)range: < 2.4.0-bp153.2.3.1
Patches
Vulnerability mechanics
References
4- www.openwall.com/lists/oss-security/2021/11/02/4nvdExploitMailing ListThird Party Advisory
- github.com/debauchee/barrier/releases/tag/v2.4.0nvdRelease NotesThird Party Advisory
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CIEVNCFEFO7L3NTM4VUZB3WKYYCBTFCI/nvd
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XMU3STOKHPEZSC54MZ42YBFFC2R3BU2Q/nvd
News mentions
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