Buffer overflow in python2 (Alpine package)

1) Buffer overflow

EUVDB-ID: #VU32042

Risk: Medium

CVSSv4.0: 4.6 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2014-4616

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to gain access to sensitive information.

Array index error in the scanstring function in the _json module in Python 2.7 through 3.5 and simplejson before 2.6.1 allows context-dependent attackers to read arbitrary process memory via a negative index value in the idx argument to the raw_decode function.

Mitigation

Install update from vendor's website.

Vulnerable software versions

python2 (Alpine package): 2.7.13-r0 - 2.7.15-r3

CPE2.3

• cpe:2.3:a:alpine:python2_alpine_package:2.7.13-r0:*:*:*:*:alpine_linux:*:3.4
• cpe:2.3:a:alpine:python2_alpine_package:2.7.13-r1:*:*:*:*:alpine_linux:*:3.5
• cpe:2.3:a:alpine:python2_alpine_package:2.7.14-r0:*:*:*:*:alpine_linux:*:3.4

External links

https://git.alpinelinux.org/aports/commit/?id=4be3cb7292f160123a915f115d008957cc422b35
https://git.alpinelinux.org/aports/commit/?id=ad08747e99adb5b413d3bf96ab08ea1f976db75b
https://git.alpinelinux.org/aports/commit/?id=b4f077dcbc709bd0e0c3b6afb922a9197e300767

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.