VULNERABILITY INTELLIGENCE

CVE-2020-13111

CVSS score7.5 HIGH

EPSS probability1.44%

CISA KEVNot currently listed

Published2020-05-16

Last modified2026-06-17

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

Description

NaviServer 4.99.4 to 4.99.19 allows denial of service due to the nsd/driver.c ChunkedDecode function not properly validating the length of a chunk. A remote attacker can craft a chunked-transfer request that will result in a negative value being passed to memmove via the size parameter, causing the process to crash.

Weakness classification

nvd@nist.gov: CWE-20

Primary references

cve@mitre.org — Patch, Third Party Advisory
cve@mitre.org — Permissions Required, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 — Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 — Permissions Required, Third Party Advisory