Slackware Linux update for rpcbind



Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2017-8779
CWE-ID CWE-400
Exploitation vector Network
Public exploit Public exploit code for vulnerability #1 is available.
Vulnerable software
 Slackware Linux
Operating systems & Components / Operating system

Vendor Slackware

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Denial of service

EUVDB-ID: #VU6435

Risk: Medium

CVSSv4.0: 8.7 [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:A/U:Green]

CVE-ID: CVE-2017-8779

CWE-ID: CWE-400 - Resource exhaustion

Exploit availability: Yes

Description

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

The vulnerability exists due to an error in xdr_bytes() and xdr_string() functions when processing RPC data during memory allocation within rpcbind implementation. A remote unauthenticated attacker can send a specially crafted UDP request to port 111 and consume up to 4 gigabytes of memory per request.

Successful exploitation of this vulnerability may result in denial of service (DoS) conditions.

Mitigation

Update the affected package rpcbind to version 0.2.4.

Vulnerable software versions

Slackware Linux: 14.2

CPE2.3 External links

https://www.slackware.com/security/viewer.php?l=slackware-security&y=2017&m=slackware-security.347794


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. However, a fully functional exploit for this vulnerability is available.



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