Amazon Linux AMI update for libXcursor

Published: 2019-02-08 | Updated: 2019-02-11
Severity High
Patch available YES
Number of vulnerabilities 1
CVE ID CVE-2015-9262
CWE ID CWE-122
Exploitation vector Network
Public exploit N/A
Vulnerable software Amazon Linux AMI Subscribe
Vendor Amazon Web Services, Inc.

Security Advisory

This security advisory describes one high risk vulnerability.

1) Heap-based buffer overflow

Severity: High

CVSSv3: 8.7 [CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C] [PCI]

CVE-ID: CVE-2015-9262

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

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: 2017.03

CPE External links

https://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.