Denial of service in libtirpc



Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2021-46828
CWE-ID CWE-400
Exploitation vector Network
Public exploit N/A
Vulnerable software
 libtirpc
Universal components / Libraries / Libraries used by multiple products

Vendor linux-nfs.org

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Resource exhaustion

EUVDB-ID: #VU66152

Risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2021-46828

CWE-ID: CWE-400 - Resource exhaustion

Exploit availability: No

Description

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

The vulnerability exists due to library improperly handles idle TCP connections. A remote attacker can exhaust the file descriptors of a process that uses libtirpc and perform a denial of service (DoS)  attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

libtirpc: 0.1.8 - 1.3.2

CPE2.3 External links

https://git.linux-nfs.org/?p=steved/libtirpc.git;a=commit;h=86529758570cef4c73fb9b9c4104fdc510f701ed


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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