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Fencer Vulns
medium 6.5

CVE-2018-1129 json

A flaw was found in the way signature calculation was handled by cephx authentication protocol.

published 2018-07-10 8 y ago modified 2026-06-17 4 mo ago also EUVD-2018-11773

cvss
6.5
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.9%
EPSS 1.9% chance of exploitation in 30 days, percentile 79%
public exploits
0
none known

Summary

A flaw was found in the way signature calculation was handled by cephx authentication protocol. An attacker having access to ceph cluster network who is able to alter the message payload was able to bypass signature checks done by cephx protocol. Ceph branches master, mimic, luminous and jewel are believed to be vulnerable.

Patch / fix

  • ceph Debian 14, Debian 13, Debian 12 12.2.8+dfsg1-1
  • linux Debian 14, Debian 13, Debian 12 4.19.9-1

debian advisories DEBIAN-CVE-2018-1129

  • ceph ceph storage 2 2:10.2.10-28.el7cp
  • librbd1 ceph storage 2 2:10.2.10-28.el7cp
  • librgw2 ceph storage 2 2:10.2.10-28.el7cp
  • ceph-mds ceph storage 2 2:10.2.10-28.el7cp
  • ceph-mon ceph storage 2 2:10.2.10-28.el7cp
  • ceph-osd ceph storage 2 2:10.2.10-28.el7cp
  • ceph-base ceph storage 2 2:10.2.10-28.el7cp
  • ceph-fuse ceph storage 2 2:10.2.10-28.el7cp

red hat advisories RHSA-2018:2261RHSA-2018:2177

  • kernel-syms SLES for SAP 12 SP2, SLES 12 SP2-LTSS, SLES 12 SP2-BCL +2 more 4.4.121-92.109.2
  • kernel-source SLES for SAP 12 SP2, SLES 12 SP2-LTSS, SLES 12 SP2-BCL +2 more 4.4.121-92.109.2
  • kernel-default SLES for SAP 12 SP2, SLES 12 SP2-LTSS, SLES 12 SP2-BCL +3 more 4.4.121-92.109.2
  • kgraft-patch-SLE12-SP2_Update_29 SLES for SAP 12 SP2, SLES 12 SP2-LTSS, OpenStack Cloud 7 +1 more 1-3.5.2
  • ceph SLE Module for Basesystem 15 13.2.4.125+gad802694f5-3.7.2
  • kernel-azure SLE Module for Public Cloud 15 4.12.14-5.16.1
  • kernel-syms-azure SLE Module for Public Cloud 15 4.12.14-5.16.1
  • kernel-source-azure SLE Module for Public Cloud 15 4.12.14-5.16.1

suse advisories SUSE-SU-2019:1287-1SUSE-SU-2019:0586-1SUSE-SU-2018:3961-1SUSE-SU-2018:2980-1SUSE-SU-2018:2981-1SUSE-SU-2018:2862-1

  • ceph openSUSE Leap 15.0 13.2.4.125+gad802694f5-lp150.2.3.1
  • ceph-test openSUSE Leap 15.0 13.2.4.125+gad802694f5-lp150.2.3.1

opensuse advisories openSUSE-SU-2019:1284-1

  • ceph Azure Linux 3.0 18.2.1-1

azure linux advisories AZL-38221

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

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-2018-1129 updated cvss 5.9

ceph: cephx uses weak signatures

  • Red Hat Ceph Storage 1.3 ceph Red Hat Enterprise Linux 7 librbd1, librados2, python-rbd, ceph-common, python-rados
    affected: no fix planned “Will not fix”
  • Red Hat Ceph Storage ceph 12.2.4-30.el7cp, ceph 10.2.10-28.el7cp, librbd1 12.2.4-30.el7cp, librgw2 12.2.4-30.el7cp, ceph-mds 12.2.4-30.el7cp, ceph-mgr 12.2.4-30.el7cp, +41 more
    fixed: vendor fix RHSA-2018:2261
  • Red Hat Ceph Storage 2 for Ubuntu
    fixed: vendor fix RHSA-2018:2274
  • Red Hat Ceph Storage 3 for Ubuntu
    fixed: vendor fix RHSA-2018:2179
  • Red Hat Enterprise Linux 8 librbd1, librados2, libcephfs2, libradosstriper1
    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

1.90% chance of exploitation in the next 30 days, higher than 79% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.0 6.5 CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
NVD 2.0 3.3 AV:A/AC:L/Au:N/C:N/I:P/A:N

Affected products

  • Red Hat, Inc. ceph

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.