#VU17859 Out-of-bounds read in Glibc - CVE-2019-9169

Vulnerability identifier: #VU17859

Vulnerability risk: Medium

CVSSv4.0: 4.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2019-9169

CWE-ID: CWE-125

Exploitation vector: Network

Exploit availability: No

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

Vendor: GNU

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack or gain access to sensitive information.

The vulnerability exists due to heap-based buffer over-read via an attempted case-insensitive regular-expression match. A remote attacker can perform a denial of service attack or gain access to sensitive information.

Mitigation
The vulnerability is fixed in GIT repository.

Vulnerable software versions

Glibc: 2.29

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External links
https://debbugs.gnu.org/cgi/bugreport.cgi?bug=34140
https://debbugs.gnu.org/cgi/bugreport.cgi?bug=34142
https://sourceware.org/bugzilla/show_bug.cgi?id=24114
https://sourceware.org/git/gitweb.cgi?p=glibc.git;a=commit;h=583dd860d5b833037175247230a328f0050dbfe9

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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.