CVE-2013-1950: The svc_dg_getargs function in libtirpc 0.2.3 and earlier allows remote attackers to cause a denial of service

Q: How do I fix CVE-2013-1950?

libtirpc: upgrade to newer than 0.2.3. Exact commands for each OS are on this page.

Q: Is CVE-2013-1950 being exploited?

CVE-2013-1950 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2013-1950 affect?

CVE-2013-1950 affects libtirpc. Severity is medium (CVSS 4.3). The svc_dg_getargs function in libtirpc 0.2.3 and earlier allows remote attackers to cause a denial of service (rpcbind crash) via a Sun RPC request with crafted arguments that trigger a free of an invalid pointer.

Q: How urgent is CVE-2013-1950?

Priority 43/100. EPSS top 6%: very likely to be exploited; Public exploit reference

This month

MEDIUM 4.3UPGRADE

CVE-2013-1950 is a medium-severity flaw (CVSS 4.3) affecting libtirpc. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The svc_dg_getargs function in libtirpc 0.2.3 and earlier allows remote attackers to cause a denial of service (rpcbind crash) via a Sun RPC request with crafted arguments that trigger a free of an invalid pointer.

Why this priority

EPSS top 6%: very likely to be exploited
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	4.3 (Medium)
EPSS exploit chance	6.5% (top 6%)
CISA exploited list	No
Weakness	CWE-399
Published	2013-07-09
Last modified	2026-06-16

Publisher (CNA): Red Hat, Inc. · Vendor: libtirpc project

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2013-07-09 17:55 UTCPublished CVE record published
2026-06-16 23:52 UTCUpdated Record last modified

libtirpc project libtirpc UPGRADE

Affected: <= 0.2.3 · 0.1.8 · 0.1.9 · 0.1.10 · 0.1.11 · 0.2.0 · 0.2.1 · 0.2.2

Fixed in: newer than 0.2.3

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy libtirpc || rpm -q libtirpc || libtirpc --version

2. UPGRADE to newer than 0.2.3 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade libtirpc

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade libtirpc

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Exploit-DB: rpcbind - CALLIT procedure UDP Crash (PoC)

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2013-1950?

libtirpc: upgrade to newer than 0.2.3. Exact commands for each OS are on this page.

Is CVE-2013-1950 being exploited?

CVE-2013-1950 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2013-1950 affect?

CVE-2013-1950 affects libtirpc. Severity is medium (CVSS 4.3). The svc_dg_getargs function in libtirpc 0.2.3 and earlier allows remote attackers to cause a denial of service (rpcbind crash) via a Sun RPC request with crafted arguments that trigger a free of an invalid pointer.

How urgent is CVE-2013-1950?

Priority 43/100. EPSS top 6%: very likely to be exploited; Public exploit reference

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CVE-2017-8779 HIGH 7.5 UPGRADE UPGRADE rpcbind through 0.2.4, LIBTIRPC through 1.0.1 and 1.0.2-rc through 1.0.2-rc3, and NTIRPC through 1.4.3 do not

References

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