CVE-2021-45450: fedoraproject fedora
CVSS: 7.5v3.1HighModified
AliasesUBUNTU-CVE-2021-45450openSUSE-SU-2024:11752-1
Published 21-12-2021Last modified 04-08-2024
Vulnerability summary
CVE-2021-45450 is a high (CVSS 7.5) vulnerability in fedoraproject fedora. EPSS estimates a 1.23% chance of exploitation in the next 30 days, higher than 68.3% of scored vulnerabilities.
CVSS score
7.5/10
010
High · v3.1 (NVD)EPSS score
1.23%
0%100%
Low · +0.04 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 1 · Related 1Timeline
- 21-12-2021PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
In Mbed TLS before 2.28.0 and 3.x before 3.1.0, psa_cipher_generate_iv and psa_cipher_encrypt allow policy bypass or oracle-based decryption when the output buffer is at memory locations accessible to an untrusted application.
CVSS metrics
3 scores · 2 sources · 2 versionsHigh 7.5Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:NSourcesAll 2 agree
- OSV · UbuntuEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Medium 5.0Preferred score · NVD (NIST)
AV:N/AC:L/Au:N/C:P/I:N/A:NSourcesSingle source
EPSS trend
Probability
1.23%
Chance of exploitation in the next 30 days
Percentile
68%
Versus all other CVEs
30-day change
+0.04 pp
From 1.19% on 19-09-2026
19-09-202619-10-2026
EPSS score1.23%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Fedoraproject1 product
- fedoraEOL36 | 37
Opensuse1 product
- mbedtls-2&distro=openSUSE Tumbleweed< 2.28.0-1.1
Trustedfirmware1 product
- mbed_tls≥ 2.22.0, < 2.28.0 | 3.0.0
Ubuntu1 product
- mbedtlsAll versions (No fix recorded)
4 vendors · 4 products