openEuler update for libproxy

1) Out-of-bounds write

EUVDB-ID: #VU46729

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

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

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 20.03 LTS SP1 - 20.03 LTS SP3

python3-libproxy: before 0.4.15-18

python2-libproxy: before 0.4.15-18

libproxy-help: before 0.4.15-18

libproxy-webkitgtk4: before 0.4.15-18

libproxy-devel: before 0.4.15-18

libproxy-debugsource: before 0.4.15-18

libproxy-debuginfo: before 0.4.15-18

libproxy: before 0.4.15-18

External links

http://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2022-1756

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.