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Fencer Vulns
medium 6.4

CVE-2020-1759 json

A vulnerability was found in Red Hat Ceph Storage 4 and Red Hat Openshift Container Storage 4.2 where, A nonce reuse vulnerability was disc…

published 2020-04-13 6 y ago modified 2026-09-08 2 mo ago also BIT-ceph-2020-1759 , EUVD-2020-12587

cvss
6.4
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.6%
EPSS 1.6% chance of exploitation in 30 days, percentile 76%
public exploits
0
none known

Summary

A vulnerability was found in Red Hat Ceph Storage 4 and Red Hat Openshift Container Storage 4.2 where, A nonce reuse vulnerability was discovered in the secure mode of the messenger v2 protocol, which can allow an attacker to forge auth tags and potentially manipulate the data by leveraging the reuse of a nonce in a session. Messages encrypted using a reused nonce value are susceptible to serious confidentiality and integrity attacks.

Patch / fix

  • bitnami ceph 14.2.21
  • linuxfoundation ceph 14.2.21
  • ceph Debian 14, Debian 13, Debian 12 14.2.9-1

debian advisories DEBIAN-CVE-2020-1759

  • ceph ceph storage 4 2:14.2.8-111.el7cp
  • ceph ceph storage 4 2:14.2.8-111.el8cp
  • librbd1 ceph storage 4 2:14.2.8-111.el7cp
  • librbd1 ceph storage 4 2:14.2.8-111.el8cp
  • librgw2 ceph storage 4 2:14.2.8-111.el7cp
  • librgw2 ceph storage 4 2:14.2.8-111.el8cp
  • rbd-nbd ceph storage 4 2:14.2.8-111.el7cp
  • rbd-nbd ceph storage 4 2:14.2.8-111.el8cp

red hat advisories RHBA-2020:4144

  • ceph SLE Module for Basesystem 15 SP1, Enterprise Storage 6 14.2.5.389+gb0f23ac248-3.35.2

suse advisories SUSE-SU-2020:0930-1

  • ceph openSUSE Leap 15.1 14.2.5.389+gb0f23ac248-lp151.2.13.1
  • ceph-test openSUSE Leap 15.1 14.2.5.389+gb0f23ac248-lp151.2.13.1

opensuse advisories openSUSE-SU-2020:0494-1

  • ceph Alpine 3.16, Alpine 3.15, Alpine 3.14 +4 more 14.2.9-r0
  • ceph16 Alpine 3.18, Alpine 3.17 14.2.9-r0

alpine advisories ALPINE-CVE-2020-1759

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

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-2020-1759 updated cvss 6.4

ceph: secure mode of msgr2 breaks both confidentiality and integrity aspects for long-lived sessions

  • Red Hat Openshift Container Storage 4 ceph
    affected: workaround, no fix planned “Will not fix”
  • Red Hat OpenStack Platform 15 (Stein) librbd1, librgw2, librados2, libcephfs2, ceph-common, python3-rbd, +5 more
    affected: workaround, no fix available
  • Red Hat Ceph Storage 4.1 MON ceph 14.2.8-111.el7cp, ceph 14.2.8-111.el8cp, librbd1 14.2.8-111.el7cp, librbd1 14.2.8-111.el8cp, librgw2 14.2.8-111.el7cp, librgw2 14.2.8-111.el8cp, +38 more Red Hat Ceph Storage 4.1 OSD ceph 14.2.8-111.el7cp, ceph 14.2.8-111.el8cp, librbd1 14.2.8-111.el7cp, librbd1 14.2.8-111.el8cp, librgw2 14.2.8-111.el7cp, librgw2 14.2.8-111.el8cp, +26 more Red Hat Ceph Storage 4.1 Tools ceph 14.2.8-111.el7cp, ceph 14.2.8-111.el8cp, librbd1 14.2.8-111.el7cp, librbd1 14.2.8-111.el8cp, librgw2 14.2.8-111.el7cp, librgw2 14.2.8-111.el8cp, +36 more
    fixed: vendor fix RHBA-2020:4144
  • Red Hat Ceph Storage 2 ceph, librbd1, librgw2, ceph-mds, ceph-mon, ceph-osd, +12 more Red Hat Ceph Storage 3 ceph, librbd1, librgw2, ceph-mds, ceph-mgr, ceph-mon, +15 more Red Hat Enterprise Linux 8 librbd1, librados2, libcephfs2, libradosstriper1 Red Hat OpenStack Platform 13 (Queens) librbd1, librgw2, ceph-fuse, librados2, libcephfs2, python-rbd, +6 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

1.63% chance of exploitation in the next 30 days, higher than 76% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 6.4 CVSS:3.1/AV:A/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N
NVD 3.1 6.8 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N
NVD 2.0 5.8 AV:N/AC:M/Au:N/C:P/I:P/A:N
OSV 3.1 6.8 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N

Affected packages

ecosystem package affected fixed in
bitnami ceph
<14.2.21
14.2.21

Affected products

  • The Ceph Project ceph

Classification

Weakness
  • CWE-323 Reusing a Nonce, Key Pair in Encryption
  • CWE-330 Use of Insufficiently Random Values

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.