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🛡️ CVE-2024-12797 — cryptography

🟡 CVSS 6.3 — Medium ✅ No Known Exploit CWE-1395 NVD
6.3
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Issue summary: Clients using RFC7250 Raw Public Keys (RPKs) to authenticate a

server may fail to notice that the server was not authenticated, because

handshakes don't abort as expected when the SSL_VERIFY_PEER verification mode

is set.

Impact summary: TLS and DTLS connections using raw public keys may be

vulnerable to man-in-middle attacks when server authentication failure is not

detected by clients.

RPKs are disabled by default in both TLS clients and TLS servers. The issue

only arises when TLS clients explicitly enable RPK use by the server, and the

server, likewise, enables sending of an RPK instead of an X.509 certificate

chain. The affected clients are those that then rely on the handshake to

fail when the server's RPK fails to match one of the expected public keys,

by setting the verification mode to SSL_VERIFY_PEER.

Clients that enable server-side raw public keys can still find out that raw

public key verification failed by calling SSL_get_verify_result(), and those

that do, and take appropriate action, are not affected. This issue was

introduced in the initial implementation of RPK support in OpenSSL 3.2.

The FIPS modules in 3.4, 3.3, 3.2, 3.1 and 3.0 are not affected by this issue.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. A user must be tricked into taking some action. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality low, integrity low, availability low.

CVSS metrics in full

The score comes from this vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L

  • Attack vector: Network — reachable from anywhere that can route to the service.
  • Attack complexity: Low — the attack works reliably, with no preparation.
  • Privileges required: None — an unauthenticated stranger can try it.
  • User interaction: Required — someone has to click, open or visit something.
  • Scope: Unchanged — the damage stays inside the vulnerable component.
  • Confidentiality impact: Low — limited, and the attacker does not choose what is affected.
  • Integrity impact: Low — limited, and the attacker does not choose what is affected.
  • Availability impact: Low — limited, and the attacker does not choose what is affected.

Weakness class

CVE-2024-12797 is classified as CWE-1395: Dependency on Vulnerable Third-Party Component. The product ships or relies on a component with known vulnerabilities, inheriting its exposure.

Affected software

CVE-2024-12797 is recorded against 2 packages.

  • cryptography (from 42.0.0 up to 44.0.1)
  • unknown

Timeline and source

Published on 7 July 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

github.com (Web)
nvd.nist.gov (Advisory)
github.com (Web)
github.com (Web)
github.com (Web)
github.com (Package)
openssl-library.org (Web)
www.openwall.com (Web)
www.openwall.com (Web)
pypi.org (Package)
github.com (Advisory)

Other advisories for this package

cryptography has other advisories on record. If you are patching this one, these are worth checking on the same host:

Same weakness in other software

These advisories are the same class of weakness (CWE-1395: Dependency on Vulnerable Third-Party Component) in other software:

Details

Severity LOW
CVSS Score 6.3
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
CWE CWE-1395
Public Exploit ✅ No
Source NVD
Published 2026-07-07
Updated 2026-08-20
Modified 2026-07-07
Fix URL N/A

Affected Packages

Software From version Fixed in
cryptography 42.0.0 44.0.1
unknown — —

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ⓘ Data Notice: The information presented above has been compiled from publicly available internet sources. Boteraser aggregates this data solely for informational purposes and does not independently classify, evaluate, or endorse any findings about the vulnerabilities listed. The accuracy and completeness of this information is the sole responsibility of the original publishers. Boteraser and its operators accept no liability for any decisions made based on this data.

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