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Fencer Intel
medium 5.8

CVE-2012-4516 json

librdmacm 1.0.16, when ibacm.port is not specified, connects to port 6125, which allows remote attackers to specify the address resolution…

published 2012-10-22 14 y ago modified 2026-06-16 4 mo ago also EUVD-2012-4445

cvss
5.8
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.1%
EPSS 2.1% chance of exploitation in 30 days, percentile 81%
public exploits
0
none known

Summary

librdmacm 1.0.16, when ibacm.port is not specified, connects to port 6125, which allows remote attackers to specify the address resolution information for the application via a malicious ib_acm service.

Patch / fix

  • librdmacm Ubuntu 14.04 LTS 1.0.16-1

ubuntu advisories UBUNTU-CVE-2012-4516

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

  • rdma RHEL 6 3.10-3.el6
  • qperf RHEL 6 0.4.9-1.el6
  • ibutils RHEL 6 1.5.7-8.el6
  • libmlx4 RHEL 6 1.0.5-4.el6.1
  • openmpi RHEL 6 1.5.4-2.el6
  • mpitests RHEL 6 3.2-9.el6
  • mstflint RHEL 6 3.0-0.6.g6961daa.1.el6
  • perftest RHEL 6 2.0-2.el6

red hat advisories RHSA-2013:1661

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-2012-4516 updated cvss 1.2

librdmacm: Tried to connect to port 6125 if ibacm.port was not found

  • Red Hat Enterprise Linux Desktop (v. 6) openmpi 1.5.4-2.el6, libibverbs 1.1.7-1.el6, librdmacm 1.0.17-1.el6, infinipath-psm 3.0.1-115.1015_open.2.el6 Red Hat Enterprise Linux Desktop Optional (v. 6) rdma 3.10-3.el6, openmpi 1.5.4-2.el6, libmlx4 1.0.5-4.el6.1, libibverbs 1.1.7-1.el6, librdmacm 1.0.17-1.el6, libibverbs-utils 1.1.7-1.el6, +2 more Red Hat Enterprise Linux HPC Node (v. 6) rdma 3.10-3.el6, qperf 0.4.9-1.el6, mpitests 3.2-9.el6, perftest 2.0-2.el6, ibutils 1.5.7-8.el6, openmpi 1.5.4-2.el6, +11 more Red Hat Enterprise Linux HPC Node Optional (v. 6) mpitests 3.2-9.el6, ibutils 1.5.7-8.el6, libmlx4 1.0.5-4.el6.1, libibverbs 1.1.7-1.el6, librdmacm 1.0.17-1.el6, mpitests-mvapich-psm 3.2-9.el6, +2 more Red Hat Enterprise Linux Server (v. 6) rdma 3.10-3.el6, qperf 0.4.9-1.el6, mpitests 3.2-9.el6, perftest 2.0-2.el6, ibutils 1.5.7-8.el6, openmpi 1.5.4-2.el6, +11 more Red Hat Enterprise Linux Server Optional (v. 6) mpitests 3.2-9.el6, ibutils 1.5.7-8.el6, libmlx4 1.0.5-4.el6.1, libibverbs 1.1.7-1.el6, librdmacm 1.0.17-1.el6, mpitests-mvapich-psm 3.2-9.el6, +2 more
    +2 more products
    Red Hat Enterprise Linux Workstation (v. 6) rdma 3.10-3.el6, qperf 0.4.9-1.el6, mpitests 3.2-9.el6, perftest 2.0-2.el6, ibutils 1.5.7-8.el6, openmpi 1.5.4-2.el6, +11 more Red Hat Enterprise Linux Workstation Optional (v. 6) mpitests 3.2-9.el6, ibutils 1.5.7-8.el6, libmlx4 1.0.5-4.el6.1, libibverbs 1.1.7-1.el6, librdmacm 1.0.17-1.el6, mpitests-mvapich-psm 3.2-9.el6, +2 more
    fixed: vendor fix RHSA-2013:1661
  • Red Hat Enterprise Linux 5 librdmacm
    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

2.11% chance of exploitation in the next 30 days, higher than 81% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 2.0 5.8 AV:N/AC:M/Au:N/C:P/I:P/A:N

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.