Amazon Linux AMI update for libapreq2

1) NULL pointer dereference

EUVDB-ID: #VU21564

Risk: Medium

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

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

Update the affected packages:

i686:
    libapreq2-libs-2.13-38.2.amzn1.i686
    libapreq2-2.13-38.2.amzn1.i686
    libapreq2-debuginfo-2.13-38.2.amzn1.i686
    libapreq2-devel-2.13-38.2.amzn1.i686
    perl-libapreq2-2.13-38.2.amzn1.i686

src:
    libapreq2-2.13-38.2.amzn1.src

x86_64:
    libapreq2-libs-2.13-38.2.amzn1.x86_64
    libapreq2-2.13-38.2.amzn1.x86_64
    libapreq2-debuginfo-2.13-38.2.amzn1.x86_64
    libapreq2-devel-2.13-38.2.amzn1.x86_64
    perl-libapreq2-2.13-38.2.amzn1.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

External links

http://alas.aws.amazon.com/ALAS-2019-1323.html

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.