Amazon Linux AMI update for libXcursor

1) Heap-based buffer overflow

EUVDB-ID: #VU17462

Risk: High

CVSSv3.1: 8.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2015-9262

CWE-ID: CWE-122 - Heap-based Buffer Overflow

Exploit availability: No

Description

The vulnerability allows a remote attacker to cause DoS condition or execute arbitrary code on the target system.

The vulnerability exists due to a boundary error in _XcursorThemeInherits in library.c. A remote attacker can trigger a one-byte heap overflow and cause the service to crash or execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Update the affected packages.

i686:
    libXcursor-devel-1.1.14-2.1.10.amzn1.i686
    libXcursor-1.1.14-2.1.10.amzn1.i686
    libXcursor-debuginfo-1.1.14-2.1.10.amzn1.i686

src:
    libXcursor-1.1.14-2.1.10.amzn1.src

x86_64:
    libXcursor-debuginfo-1.1.14-2.1.10.amzn1.x86_64
    libXcursor-devel-1.1.14-2.1.10.amzn1.x86_64
    libXcursor-1.1.14-2.1.10.amzn1.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

External links

http://alas.aws.amazon.com/ALAS-2019-1150.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.