CVE-2020-1759: fedoraproject fedora Reusing a Nonce, Key Pair in Encryption
Vulnerability summary
CVE-2020-1759 is a medium (CVSS 6.8) Reusing a Nonce, Key Pair in Encryption vulnerability in fedoraproject fedora. EPSS estimates a 1.63% chance of exploitation in the next 30 days, higher than 76.1% of scored vulnerabilities.
Not severe (CVSS 6.4, adjacent network); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 2 · Related 2Timeline
- 13-04-2020PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
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.
CVSS metrics
7 scores · 6 sources · 2 versions- CVE.orgCNA6.4MediumCVSS:3.1/AV:A/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:NDiffers
- OSV · Red hatEcosystem advisory · calculated6.4MediumCVSS:3.1/AV:A/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:NDiffers
- OSV · UbuntuEcosystem advisory · calculated6.4MediumCVSS:3.1/AV:A/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:NDiffers
- OSV · DebianEcosystem advisory · calculated6.8MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N
- OSV · AlpineEcosystem advisory · calculated6.8MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N
EPSS trend
Probability
1.63%
Chance of exploitation in the next 30 days
Percentile
76%
Versus all other CVEs
30-day change
No change 0.00 pp
From 1.63% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: adjacent network, no authentication, user interaction (CVSS vector). Other conditions: not stated in public data.
Redhat66 products
- ceph_storage4.0
- openshiftEOL4.2
- openstack15
- ceph< 2:14.2.8-111.el7cp | < 2:14.2.8-111.el8cp
- ceph-ansible< 0:4.0.31-1.el7cp | < 0:4.0.31-1.el8cp
Alpine2 products
- ceph< 14.2.9-r0
- ceph16< 14.2.9-r0
Debian1 product
- ceph< 14.2.9-1
Fedoraproject1 product
- fedoraEOL31
Linuxfoundation1 product
- ceph< 14.2.21
The ceph project1 product
- cephRed Hat Ceph Storage 4 | Red Hat Openshift Container Storage 4.2
Ubuntu1 product
- ceph< 15.2.1-0ubuntu1
7 vendors · 73 products
References
85 links- bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1759X Refsource CONFIRMIssue TrackingPatchVendor Advisory
