Ubuntu update for Python

1) Integer overflow

EUVDB-ID: #VU9432

Risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2017-1000158

CWE-ID: CWE-190 - Integer overflow

Exploit availability: No

Description

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

The weakness exists due to an integer overflow in the PyString_DecodeEscape function in stringobject.c. A remote attacker can trigger heap-based buffer overflow and execute arbitrary code with elevated privileges.

Successful exploitation of the vulnerability may result in system compromise.

Mitigation

Update the affected packages

Ubuntu 17.04:

python3.5 3.5.3-1ubuntu0~17.04.2

python3.5-minimal 3.5.3-1ubuntu0~17.04.2

Ubuntu 16.04 LTS:

python3.5 3.5.2-2ubuntu0~16.04.4

python3.5-minimal 3.5.2-2ubuntu0~16.04.4

Ubuntu 14.04 LTS:

python3.4 3.4.3-1ubuntu1~14.04.6

python3.4-minimal 3.4.3-1ubuntu1~14.04.6

Vulnerable software versions

Ubuntu: 14.04 - 17.04

CPE2.3

• cpe:2.3:o:canonical:ubuntu:14.04:*:*:*:*:*:*:*
• cpe:2.3:o:canonical:ubuntu:16.04:*:*:*:*:*:*:*
• cpe:2.3:o:canonical:ubuntu:17.04:*:*:*:*:*:*:*

External links

https://www.ubuntu.com/usn/usn-3496-3/

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.