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Fencer Intel
medium 5.0

CVE-2011-4609 json

The svc_run function in the RPC implementation in glibc before 2.15 allows remote attackers to cause a denial of service (CPU consumption)…

published 2013-05-02 13 y ago modified 2026-06-16 4 mo ago also EUVD-2011-4533

cvss
5.0
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.8%
EPSS 1.8% chance of exploitation in 30 days, percentile 79%
public exploits
0
none known

Summary

The svc_run function in the RPC implementation in glibc before 2.15 allows remote attackers to cause a denial of service (CPU consumption) via a large number of RPC connections.

Patch / fix

  • glibc RHEL 5 2.5-65.el5_7.3
  • nscd RHEL 5 2.5-65.el5_7.3
  • glibc-utils RHEL 5 2.5-65.el5_7.3
  • glibc-common RHEL 5 2.5-65.el5_7.3
  • glibc-debuginfo-common RHEL 5 2.5-65.el5_7.3
  • glibc RHEL 4 2.3.4-2.57
  • nscd RHEL 4 2.3.4-2.57
  • glibc-utils RHEL 4 2.3.4-2.57

red hat advisories RHSA-2012:0126RHSA-2012:0125RHSA-2012:0058

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-2011-4609 updated cvss 3.3

glibc: svc_run() produces high cpu usage when accept() fails with EMFILE error

  • Red Hat Enterprise Linux (v. 5 server) nscd 2.5-65.el5_7.3, glibc 2.5-65.el5_7.3, glibc-utils 2.5-65.el5_7.3, glibc-common 2.5-65.el5_7.3, glibc-debuginfo-common 2.5-65.el5_7.3
    fixed: vendor fix RHSA-2012:0126
  • Red Hat Enterprise Linux AS version 4 nscd 2.3.4-2.57, glibc 2.3.4-2.57, glibc-utils 2.3.4-2.57, glibc-common 2.3.4-2.57, glibc-profile 2.3.4-2.57, glibc-debuginfo-common 2.3.4-2.57
    fixed: vendor fix RHSA-2012:0125
  • Red Hat Enterprise Linux Desktop (v. 5 client) nscd 2.5-65.el5_7.3, glibc 2.5-65.el5_7.3, glibc-utils 2.5-65.el5_7.3, glibc-common 2.5-65.el5_7.3, glibc-debuginfo-common 2.5-65.el5_7.3
    fixed: vendor fix RHSA-2012:0126
  • Red Hat Enterprise Linux Desktop (v. 6) nscd 2.12-1.47.el6_2.5, glibc 2.12-1.47.el6_2.5, glibc-utils 2.12-1.47.el6_2.5, glibc-common 2.12-1.47.el6_2.5, glibc-debuginfo-common 2.12-1.47.el6_2.5 Red Hat Enterprise Linux Desktop Optional (v. 6) glibc 2.12-1.47.el6_2.5, glibc-debuginfo-common 2.12-1.47.el6_2.5
    fixed: vendor fix RHSA-2012:0058
  • Red Hat Enterprise Linux Desktop version 4 nscd 2.3.4-2.57, glibc 2.3.4-2.57, glibc-utils 2.3.4-2.57, glibc-common 2.3.4-2.57, glibc-profile 2.3.4-2.57, glibc-debuginfo-common 2.3.4-2.57 Red Hat Enterprise Linux ES version 4 nscd 2.3.4-2.57, glibc 2.3.4-2.57, glibc-utils 2.3.4-2.57, glibc-common 2.3.4-2.57, glibc-profile 2.3.4-2.57, glibc-debuginfo-common 2.3.4-2.57
    fixed: vendor fix RHSA-2012:0125
  • Red Hat Enterprise Linux HPC Node (v. 6) nscd 2.12-1.47.el6_2.5, glibc 2.12-1.47.el6_2.5, glibc-utils 2.12-1.47.el6_2.5, glibc-common 2.12-1.47.el6_2.5, glibc-debuginfo-common 2.12-1.47.el6_2.5 Red Hat Enterprise Linux HPC Node Optional (v. 6) glibc 2.12-1.47.el6_2.5, glibc-debuginfo-common 2.12-1.47.el6_2.5 Red Hat Enterprise Linux Server (v. 6) nscd 2.12-1.47.el6_2.5, glibc 2.12-1.47.el6_2.5, glibc-utils 2.12-1.47.el6_2.5, glibc-common 2.12-1.47.el6_2.5, glibc-debuginfo-common 2.12-1.47.el6_2.5 Red Hat Enterprise Linux Server Optional (v. 6) glibc 2.12-1.47.el6_2.5, glibc-debuginfo-common 2.12-1.47.el6_2.5 Red Hat Enterprise Linux Workstation (v. 6) nscd 2.12-1.47.el6_2.5, glibc 2.12-1.47.el6_2.5, glibc-utils 2.12-1.47.el6_2.5, glibc-common 2.12-1.47.el6_2.5, glibc-debuginfo-common 2.12-1.47.el6_2.5 Red Hat Enterprise Linux Workstation Optional (v. 6) glibc 2.12-1.47.el6_2.5, glibc-debuginfo-common 2.12-1.47.el6_2.5
    fixed: vendor fix RHSA-2012:0058
  • Red Hat Enterprise Linux WS version 4 nscd 2.3.4-2.57, glibc 2.3.4-2.57, glibc-utils 2.3.4-2.57, glibc-common 2.3.4-2.57, glibc-profile 2.3.4-2.57, glibc-debuginfo-common 2.3.4-2.57
    fixed: vendor fix RHSA-2012:0125

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

1.83% chance of exploitation in the next 30 days, higher than 79% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P

Classification

Weakness
  • CWE-399 Resource Management Errors

References

Sources

Fencer Intel 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.