openEuler 20.03 LTS SP1 update for httpd

1) NULL pointer dereference

EUVDB-ID: #VU53777

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-2021-26690

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

Description

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

The vulnerability exists due to a NULL pointer dereference error in mod_session. A remote attacker can pass specially crafted data to the application and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 20.03 LTS SP1

httpd-help: before 2.4.43-8

httpd-filesystem: before 2.4.43-8

mod_proxy_html: before 2.4.43-8

httpd-tools: before 2.4.43-8

mod_ldap: before 2.4.43-8

httpd-devel: before 2.4.43-8

httpd-debuginfo: before 2.4.43-8

mod_ssl: before 2.4.43-8

mod_md: before 2.4.43-8

mod_session: before 2.4.43-8

httpd-debugsource: before 2.4.43-8

httpd: before 2.4.43-8

External links

http://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2021-1253

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.