Amazon Linux AMI update for e2fsprogs

Published: 2015-06-16

Risk	Medium
Patch available	YES
Number of vulnerabilities	1
CVE-ID	CVE-2015-0247
CWE-ID	CWE-122
Exploitation vector	Local
Public exploit	N/A
Vulnerable software Subscribe	Amazon Linux AMI Operating systems & Components / Operating system
Vendor	Amazon Web Services

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Heap-based buffer overflow

EUVDB-ID: #VU32443

Risk: Medium

CVSSv3.1: 5.2 [CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2015-0247

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

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error in Heap-based buffer overflow in openfs.c in the libext2fs library in e2fsprogs before 1.42.12. A remote attacker can use crafted block group descriptor data in a filesystem image. to trigger heap-based buffer overflow and 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:
    e2fsprogs-devel-1.42.12-4.35.amzn1.i686
    libcom_err-devel-1.42.12-4.35.amzn1.i686
    e2fsprogs-static-1.42.12-4.35.amzn1.i686
    e2fsprogs-libs-1.42.12-4.35.amzn1.i686
    libcom_err-1.42.12-4.35.amzn1.i686
    e2fsprogs-debuginfo-1.42.12-4.35.amzn1.i686
    libss-devel-1.42.12-4.35.amzn1.i686
    e2fsprogs-1.42.12-4.35.amzn1.i686
    libss-1.42.12-4.35.amzn1.i686

src:
    e2fsprogs-1.42.12-4.35.amzn1.src

x86_64:
    libcom_err-1.42.12-4.35.amzn1.x86_64
    e2fsprogs-debuginfo-1.42.12-4.35.amzn1.x86_64
    libcom_err-devel-1.42.12-4.35.amzn1.x86_64
    e2fsprogs-devel-1.42.12-4.35.amzn1.x86_64
    libss-devel-1.42.12-4.35.amzn1.x86_64
    e2fsprogs-libs-1.42.12-4.35.amzn1.x86_64
    e2fsprogs-1.42.12-4.35.amzn1.x86_64
    libss-1.42.12-4.35.amzn1.x86_64
    e2fsprogs-static-1.42.12-4.35.amzn1.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

External links

http://alas.aws.amazon.com/ALAS-2015-542.html

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.