#VU26628 Use-after-free


Published: 2020-04-07

Vulnerability identifier: #VU26628

Vulnerability risk: High

CVSSv3.1:

CVE-ID: CVE-2020-1752

CWE-ID: CWE-416

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Glibc
Universal components / Libraries / Libraries used by multiple products

Vendor: GNU

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a use-after-free error within the glob() function in glibc in the way the tilde expansion was carried out. Directory paths containing an initial tilde followed by a valid username are affected by this issue. A local user can create a specially crafted path that, when processed by the glob() function, would potentially lead to arbitrary code execution.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Glibc: 2.14.1 - 2.30


CPE

External links
http://bugzilla.redhat.com/show_bug.cgi?id=1810718
http://sourceware.org/git/gitweb.cgi?p=glibc.git;h=ddc650e9b3dc916eab417ce9f79e67337b05035c
http://sourceware.org/bugzilla/show_bug.cgi?id=25414


Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?


Latest bulletins with this vulnerability