Vulnerability identifier: #VU17885
Vulnerability risk: Low
CVSSv3.1: 5.4 [CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-20
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 perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of user-supplied input passed to parse_reg_exp() function in posix/regcomp.c . A local user can send specially crafted input to application that uses the affected version of glibc and perform denial of service attack.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
Glibc: 1.00 - 2.27
External links
http://git.savannah.gnu.org/cgit/gnulib.git/commit/?id=5513b40999149090987a0341c018d05d3eea1272
http://debbugs.gnu.org/cgi/bugreport.cgi?bug=22793
http://debbugs.gnu.org/cgi/bugreport.cgi?bug=32806
http://debbugs.gnu.org/cgi/bugreport.cgi?bug=34238
http://sourceware.org/bugzilla/show_bug.cgi?id=11053
http://sourceware.org/bugzilla/show_bug.cgi?id=18986
http://sourceware.org/git/gitweb.cgi?p=glibc.git;h=eb04c21373e2a2885f3d52ff192b0499afe3c672
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.