Fedora 32 update for curl

1) Expired pointer dereference

EUVDB-ID: #VU45794

Risk: Low

CVSSv4.0: 1.7 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2020-8231

CWE-ID: CWE-825 - Expired pointer dereference

Exploit availability: No

Description

The vulnerability allows an attacker to gain access to sensitive information.

The vulnerability exists due to expired pointer dereference error for CURLOPT_CONNECT_ONLY connections that may lead to information disclosure. If the application is using the CURLOPT_CONNECT_ONLY option to check if the website is accessible, an attacker might abuse this feature and force the application to re-use expired connection and send data intended to another connection to attacker controlled server.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

Fedora: 32

curl: before 7.69.1-5.fc32

CPE2.3

• cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*
• cpe:2.3:a:fedoraproject:curl:*:*:*:*:*:fedora:*:*

External links

https://bodhi.fedoraproject.org/updates/FEDORA-2020-da832cb434

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.