CVE-2020-25219
url::recvline in url.cpp in libproxy 0.4.x through 0.4.15 allows a remote HTTP server to trigger uncontrolled recursion via a response composed of an infinite stream that lacks a newline character.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (4.37%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
url::recvline in url.cpp in libproxy 0.4.x through 0.4.15 allows a remote HTTP server to trigger uncontrolled recursion via a response composed of an infinite stream that lacks a newline character. This leads to stack exhaustion.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 4.37% probability · 91th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-674
- Affected
- libproxy project/libproxy · debian/debian linux · fedoraproject/fedora · opensuse/leap · canonical/ubuntu linux
- Source
- cve@mitre.org
EPSS 4.4% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00030.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00033.htmlMailing List, Third Party Advisory
- https://github.com/libproxy/libproxy/issues/134Exploit, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/09/msg00012.htmlThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CNID6EZVOVH7EZB7KFU2EON54CFDIVUR/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JF5JSONJNO64ARWRVOS6K6HSIPHEF3H2/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SSVZAAVHBJR3Z4MZNR55QW3OQFAS2STH/
- https://usn.ubuntu.com/4514-1/Third Party Advisory
- https://www.debian.org/security/2020/dsa-4800Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00030.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00033.htmlMailing List, Third Party Advisory
- https://github.com/libproxy/libproxy/issues/134Exploit, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/09/msg00012.htmlThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CNID6EZVOVH7EZB7KFU2EON54CFDIVUR/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JF5JSONJNO64ARWRVOS6K6HSIPHEF3H2/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SSVZAAVHBJR3Z4MZNR55QW3OQFAS2STH/
- https://usn.ubuntu.com/4514-1/Third Party Advisory
- https://www.debian.org/security/2020/dsa-4800Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.