CVE-2017-7376

Severity: critical (CVSS 9.8 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 23.0% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2018-02-19 · updated 2026-10-14
Weakness: CWE-119

Description

Buffer overflow in libxml2 allows remote attackers to execute arbitrary code by leveraging an incorrect limit for port values when handling redirects.

Affected products

Debian Linux: 8.0, 9.0
Android: 4.4.4, 5.0.2, 5.1.1, 6.0, 6.0.1, 7.0 (+2)
xmlsoft libxml2: before 2.9.5 — fixed in 2.9.5

How to fix

Upgrade to a fixed version: xmlsoft libxml2 2.9.5. Check the vendor advisory for mitigations.

References

http://www.securityfocus.com/bid/98877
http://www.securitytracker.com/id/1038623
https://android.googlesource.com/platform/external/libxml2/+/51e0cb2e5ec18eaf6fb331bc573ff27b743898f4
https://bugzilla.redhat.com/show_bug.cgi?id=1462216
https://git.gnome.org/browse/libxml2/commit/?id=5dca9eea1bd4263bfa4d037ab2443de1cd730f7e
https://source.android.com/security/bulletin/2017-06-01
https://www.debian.org/security/2017/dsa-3952
http://www.securityfocus.com/bid/98877
http://www.securitytracker.com/id/1038623
https://android.googlesource.com/platform/external/libxml2/+/51e0cb2e5ec18eaf6fb331bc573ff27b743898f4
https://bugzilla.redhat.com/show_bug.cgi?id=1462216
https://git.gnome.org/browse/libxml2/commit/?id=5dca9eea1bd4263bfa4d037ab2443de1cd730f7e

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