PT-2019-4735 · Apache+2 · Libapreq2+2

Max Kellermann · Published 2019-09-30 · Updated 2021-08-17 · CVE-2019-12412

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

AV:N/AC:L/Au:N/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions libapreq2 versions 2.07 through 2.13

Description The issue is related to a flaw in the libapreq2 multipart parser, which can cause a null pointer dereference, leading to a process crash. A remote attacker could exploit this by sending a specially crafted HTTP request, potentially resulting in a denial of service attack.

Recommendations For libapreq2 versions 2.07 through 2.13, consider disabling the create multipart context() function as a temporary workaround until a patch is available. Restrict access to the multipart parser to minimize the risk of exploitation. Avoid using the vulnerable multipart parser in HTTP requests until the issue is resolved. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

DoS

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

ALT-PU-2021-1514

BDU:2020-01287

CVE-2019-12412

DLA-1944-1

DSA-4541-1

MGASA-2019-0327

USN-4558-1

USN-5041-1

Affected Products

Alt Linux

Ubuntu

Libapreq2

References · 26

• https://osv.dev/vulnerability/USN-5041-1 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2019-12412 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2019-12412 · Security Note
• https://osv.dev/vulnerability/DSA-4541-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-12412 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-5041-1 · Vendor Advisory
• https://debian.org/security/2019/dsa-4541 · Vendor Advisory
• https://advisories.mageia.org/MGASA-2019-0327.html · Security Note
• https://osv.dev/vulnerability/USN-4558-1 · Vendor Advisory
• https://lists.apache.org/thread.html/rce5814279a615d4a17c870a3c5b77f57975874d382ffee0b73b7f9da%40%3Cmodperl.perl.apache.org%3E · Vendor Advisory
• https://bdu.fstec.ru/vul/2020-01287 · Security Note
• https://osv.dev/vulnerability/DLA-1944-1 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2019-12412 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2019-12412 · Vendor Advisory
• https://osv.dev/vulnerability/MGASA-2019-0327 · Vendor Advisory