Denial of service in libapreq2

1) NULL pointer dereference

EUVDB-ID: #VU21564

Risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2019-12412

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 when processing nested "multipart" body. A remote attacker can send a specially crafted HTTP request and perform a denial of service (DoS) attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

libapreq2: 2.01-dev - 2.13

CPE2.3

• cpe:2.3:a:apache_foundation:libapreq2:2.01-dev:*:*:*:*:*:*:*
• cpe:2.3:a:apache_foundation:libapreq2:2.02-dev:*:*:*:*:*:*:*
• cpe:2.3:a:apache_foundation:libapreq2:2.03-dev:*:*:*:*:*:*:*

External links

https://www.debian.org/security/2019/dsa-4541

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.