CVE-2024-5814
published 2024-08-27CVE-2024-5814: A malicious TLS1.2 server can force a TLS1.3 client with downgrade capability to use a ciphersuite that it did not agree to and achieve a successful…
PriorityP428medium5.3CVSS 3.1
AVNACLPRNUINSUCLINAN
EPSS
0.47%
37.8th percentile
A malicious TLS1.2 server can force a TLS1.3 client with downgrade capability to use a ciphersuite that it did not agree to and achieve a successful connection. This is because, aside from the extensions, the client was skipping fully parsing the server hello. https://doi.org/10.46586/tches.v2024.i1.457-500
Affected
8 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | wolfssl | < wolfssl 5.7.2-0.1 (forky) | wolfssl 5.7.2-0.1 (forky) |
| msrc | azure_linux_3.0_arm | — | — |
| msrc | azure_linux_3.0_x64 | — | — |
| msrc | cbl_mariner_2.0_arm | — | — |
| msrc | cbl_mariner_2.0_x64 | — | — |
| wolfssl | wolfssl | <= 5.7.0 | — |
| wolfssl | wolfssl | >= 0 < 5.7.2-0.1 | 5.7.2-0.1 |
| wolfssl | wolfssl | >= 0 < 5.7.2-0.1 | 5.7.2-0.1 |
CVSS provenance
nvdv3.15.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
nvdv4.05.1MEDIUMCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:Y/R:X/V:D/RE:M/U:Green
osv5.1MEDIUM
vendor_debian5.1MEDIUM
vendor_msrc5.1MEDIUM
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Microsoft
Unverifed Ciphersuite used on a client-side TLS1.3 Downgrade
vendor_msrc·2024-08-13·CVSS 5.1
CVE-2024-5814 [MEDIUM] CWE-284 Unverifed Ciphersuite used on a client-side TLS1.3 Downgrade
Unverifed Ciphersuite used on a client-side TLS1.3 Downgrade
FAQ: Is Azure Linux the only Microsoft product that includes this open-source library and is therefore potentially affected by this vulnerability?
One of the main benefits to our customers who choose to use the Azure Linux distro is the commitment to keep it up to date with the most recent and most secure versions of the open source libraries with which the distro is composed. Microsoft is committed to transparency in this work which is why we began publishing CSAF/VEX in October 2025. See this blog post for more information. If impact to additional products is identified, we will update the CVE to reflect this.
Mariner: Mariner
wolfSSL: wolfSSL
Customer Action Required: Yes
Debian
CVE-2024-5814: wolfssl - A malicious TLS1.2 server can force a TLS1.3 client with downgrade capability to...
vendor_debian·2024·CVSS 5.1
CVE-2024-5814 [MEDIUM] CVE-2024-5814: wolfssl - A malicious TLS1.2 server can force a TLS1.3 client with downgrade capability to...
A malicious TLS1.2 server can force a TLS1.3 client with downgrade capability to use a ciphersuite that it did not agree to and achieve a successful connection. This is because, aside from the extensions, the client was skipping fully parsing the server hello. https://doi.org/10.46586/tches.v2024.i1.457-500
Scope: local
bookworm: open
bullseye: open
forky: resolved (fixed in 5.7.2-0.1)
sid: resolved (fixed in 5.7.2-0.1)
trixie: resolved (fixed in 5.7.2-0.1)
GHSA
GHSA-8cr7-x5g8-m3f3: A malicious TLS1
ghsa_unreviewed·2024-08-27
CVE-2024-5814 [MEDIUM] CWE-284 GHSA-8cr7-x5g8-m3f3: A malicious TLS1
A malicious TLS1.2 server can force a TLS1.3 client with downgrade capability to use a ciphersuite that it did not agree to and achieve a successful connection. This is because, aside from the extensions, the client was skipping fully parsing the server hello. https://doi.org/10.46586/tches.v2024.i1.457-500
OSV
CVE-2024-5814: A malicious TLS1
osv·2024-08-27·CVSS 5.1
CVE-2024-5814 [MEDIUM] CVE-2024-5814: A malicious TLS1
A malicious TLS1.2 server can force a TLS1.3 client with downgrade capability to use a ciphersuite that it did not agree to and achieve a successful connection. This is because, aside from the extensions, the client was skipping fully parsing the server hello. https://doi.org/10.46586/tches.v2024.i1.457-500
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2024-08-27
Published