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Fencer Vulns
medium 5.9

CVE-2016-4429 json

Stack-based buffer overflow in the clntudp_call function in sunrpc/clnt_udp.c in the GNU C Library (aka glibc or libc6) allows remote serve…

published 2016-06-10 10 y ago modified 2026-06-17 4 mo ago also EUVD-2016-5427

cvss
5.9
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
4.6%
EPSS 4.6% chance of exploitation in 30 days, percentile 91%
public exploits
0
none known

Summary

Stack-based buffer overflow in the clntudp_call function in sunrpc/clnt_udp.c in the GNU C Library (aka glibc or libc6) allows remote servers to cause a denial of service (crash) or possibly unspecified other impact via a flood of crafted ICMP and UDP packets.

Patch / fix

  • gnu glibc 2.24
  • glibc Debian 14, Debian 13, Debian 12 2.22-10
  • libtirpc Debian 14, Debian 13, Debian 12 0.2.5-1.1

debian advisories DEBIAN-CVE-2016-4429

  • glibc Ubuntu 16.04 LTS 2.23-0ubuntu6
  • eglibc Ubuntu 14.04 LTS 2.19-0ubuntu6.10
  • libtirpc Ubuntu 14.04 LTS 0.2.2-5ubuntu2.1
  • libtirpc Ubuntu 16.04 LTS 0.2.5-1ubuntu0.1

ubuntu advisories UBUNTU-CVE-2016-4429

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • glibc SLES for SAP 11 SP4, SLES 11 SP4, SLE Software Development Kit 11 SP4 2.11.3-17.102.1
  • glibc SLES for SAP 12 SP1, SLES 12 SP1, SLED 12 SP1 +1 more 2.19-38.2
  • glibc SLES for SAP 12, SLES 12, SLED 12 +1 more 2.19-22.16.2

suse advisories SUSE-SU-2016:2156-1SUSE-SU-2016:1733-1SUSE-SU-2016:1721-1

  • glibc openSUSE Tumbleweed 2.24-2.3

opensuse advisories openSUSE-SU-2024:10154-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2016-4429 updated cvss 5.9

glibc: libtirpc: stack (frame) overflow in Sun RPC clntudp_call()

  • Red Hat Enterprise Linux 7 nscd, glibc, libtirpc, glibc-utils, glibc-common
    affected: no fix planned “Will not fix”
  • Red Hat Enterprise Linux 5 glibc, compat-glibc Red Hat Enterprise Linux 6 nscd, glibc, libtirpc, glibc-utils, compat-glibc, glibc-common Red Hat Enterprise Linux 7 compat-glibc Red Hat Enterprise Linux 8 nscd, glibc, libnsl, nss_db, nss_hesiod, glibc-utils, +7 more
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

4.58% chance of exploitation in the next 30 days, higher than 91% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:N/A:P

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.