Debian update for libproxy

Published: 2020-11-30

Risk	High
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2020-25219 CVE-2020-26154
CWE-ID	CWE-787 CWE-120
Exploitation vector	Network
Public exploit	N/A
Vulnerable software	libproxy (Debian package) Operating systems & Components / Operating system package or component
Vendor	Debian

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Out-of-bounds write

EUVDB-ID: #VU46729

Risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2020-25219

CWE-ID: CWE-787 - Out-of-bounds write

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.

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.

Mitigation

Update libproxy package to version 0.4.15-5+deb10u1.

Vulnerable software versions

libproxy (Debian package): 0.4.7-0ubuntu1 - 0.4.15-13

CPE2.3

External links

https://www.debian.org/security/2020/dsa-4800

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Buffer overflow

EUVDB-ID: #VU47695

Risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2020-26154

CWE-ID: CWE-120 - Buffer overflow