CVE-2015-8983

high
New! CVE Severity Now Using CVSS v3

The calculated severity for CVEs has been updated to use CVSS v3 by default. CVEs that do not have a CVSS v3 score will fall back CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

Description

Integer overflow in the _IO_wstr_overflow function in libio/wstrops.c in the GNU C Library (aka glibc or libc6) before 2.22 allows context-dependent attackers to cause a denial of service (application crash) or possibly execute arbitrary code via vectors related to computing a size in bytes, which triggers a heap-based buffer overflow.

References

http://www.openwall.com/lists/oss-security/2017/02/14/9

http://www.securityfocus.com/bid/72740

https://sourceware.org/bugzilla/show_bug.cgi?id=17269

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=bdf1ff052a8e23d637f2c838fa5642d78fcedc33

https://www.sourceware.org/ml/libc-alpha/2015-08/msg00609.html

Details

Source: MITRE

Published: 2017-03-20

Updated: 2017-03-22

Type: CWE-190

Risk Information

CVSS v2

Base Score: 6.8

Vector: AV:N/AC:M/Au:N/C:P/I:P/A:P

Impact Score: 6.4

Exploitability Score: 8.6

Severity: MEDIUM

CVSS v3

Base Score: 8.1

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Impact Score: 5.9

Exploitability Score: 2.2

Severity: HIGH

Vulnerable Software

Configuration 1

OR

cpe:2.3:a:gnu:glibc:*:*:*:*:*:*:*:* versions up to 2.21 (inclusive)

Tenable Plugins

View all (3 total)

IDNameProductFamilySeverity
97936Ubuntu 12.04 LTS : eglibc regression (USN-3239-3)NessusUbuntu Local Security Checks
high
97887Ubuntu 12.04 LTS / 14.04 LTS / 16.04 LTS : eglibc, glibc regression (USN-3239-2)NessusUbuntu Local Security Checks
high
97856Ubuntu 12.04 LTS / 14.04 LTS / 16.04 LTS : eglibc, glibc vulnerabilities (USN-3239-1)NessusUbuntu Local Security Checks
high