CVE-2019-5885: fedoraproject fedora Use of Insufficiently Random Values
CVSS: 7.5v3.0HighModified
AliasesGHSA-jrqm-v8cv-53wwPYSEC-2019-187UBUNTU-CVE-2019-5885DEBIAN-CVE-2019-5885
Published 19-03-2019Last modified 04-08-2024
Vulnerability summary
CVE-2019-5885 is a high (CVSS 7.5) Use of Insufficiently Random Values vulnerability in fedoraproject fedora. EPSS estimates a 2.44% chance of exploitation in the next 30 days, higher than 84% of scored vulnerabilities.
CVSS score
7.5/10
010
High · v3.0 (NVD)EPSS score
2.44%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 2 · Related 2Timeline
- 19-03-2019PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
Matrix Synapse before 0.34.0.1, when the macaroon_secret_key authentication parameter is not set, uses a predictable value to derive a secret key and other secrets which could allow remote attackers to impersonate users.
CVSS metrics
6 scores · 4 sources · 3 versionsHigh 8.7Preferred score · OSV · Pypi (Ecosystem advisory) · calculated from vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:NSourcesSingle source
High 7.5Preferred score · NVD (NIST)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:NSourcesAll 4 agree
- OSV · PypiEcosystem advisory · calculated7.5HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- OSV · UbuntuEcosystem advisory · calculated7.5HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- OSV · DebianEcosystem advisory · calculated7.5HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Medium 5.0Preferred score · NVD (NIST)
AV:N/AC:L/Au:N/C:N/I:P/A:NSourcesSingle source
EPSS trend
Probability
2.44%
Chance of exploitation in the next 30 days
Percentile
84%
Versus all other CVEs
30-day change
0.00 pp
From 2.44% on 18-09-2026
18-09-202618-10-2026
EPSS score2.44%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Debian1 product
- matrix-synapse< 0.34.1.1-1
Fedoraproject1 product
- fedoraEOL28 | 29
Matrix1 product
- synapse< 0.34.0.1
PyPI1 product
- matrix-synapse< 0.34.0.1
Ubuntu1 product
- matrix-synapse< 0.24.0+dfsg-1ubuntu0.1~esm1
5 vendors · 5 products
References
22 links- lists.fedoraproject.org/archives/…X Refsource CONFIRM
- lists.fedoraproject.org/archives/…X Refsource CONFIRM
- matrix.org/blog/2019/01/10/critical-security-update-synapse-0-34-0-1-synapse-0-34-1-1/X Refsource CONFIRMARTICLEREPORTVendor Advisory
