Remote denial of service in glibc



Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2023-4806
CWE-ID CWE-416
Exploitation vector Network
Public exploit N/A
Vulnerable software
 Glibc
Universal components / Libraries / Libraries used by multiple products

Vendor GNU

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Use-after-free

EUVDB-ID: #VU81447

Risk: Medium

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

CVE-ID: CVE-2023-4806

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows an attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a use-after-free error within the getaddrinfo() function. A remote attacker can perform a denial of service (DoS) attack.


Mitigation

Install update from vendor's website.

Vulnerable software versions

Glibc: 2.33 - 2.38.9000

CPE2.3 External links

https://bugzilla.redhat.com/show_bug.cgi?id=2237782
https://access.redhat.com/security/cve/CVE-2023-4806


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.



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