CVE-2021-28905 — Reachable Assertion in Libyang

CWE-617 — Reachable AssertionCWE-476 — NULL Pointer Dereference5 documents5 sources
Severity
7.5HIGHNVD
EPSS
0.4%
top 38.95%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
3
Cesnet LibyangDebian LibyangDebian Libyang2
Timeline
PublishedMay 20
Latest updateMay 24

Description

In function lys_node_free() in libyang module can't be NULL. But in some cases, node->module can be null, which triggers a reachable assertion (CWE-617).

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

▶debiandebian/libyang< libyang 3.4.2+dfsg-2 (forky)
▶debiandebian/libyang2< libyang 3.4.2+dfsg-2 (forky)
▶Debiancesnet/libyang< 3.4.2+dfsg-2+1
▶NVDcesnet/libyang1.0.225

Patches

Patch: github.com ↗Patch: github.com ↗

🔴Vulnerability Details

2
GHSA
GHSA-qj7j-m28f-g68x: In function lys_node_free() in libyang module can't be NULL↗2022-05-24
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OSV
CVE-2021-28905: In function lys_node_free() in libyang module can't be NULL↗2021-05-20
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📋Vendor Advisories

2
Red Hat
libyang: reachable assertion in lys_node_free()↗2021-03-08
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Debian
CVE-2021-28905: libyang - In function lys_node_free() in libyang <= v1.0.225, it asserts that the value of...↗2021
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