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🛡️ CVE-2024-1544 — wolfssl

🟡 CVSS 4.1 — Medium ✅ No Known Exploit CWE-203 NVD
4.1
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Generating the ECDSA nonce k samples a random number r and then

truncates this randomness with a modular reduction mod n where n is the

order of the elliptic curve. Meaning k = r mod n. The division used

during the reduction estimates a factor q_e by dividing the upper two

digits (a digit having e.g. a size of 8 byte) of r by the upper digit of

n and then decrements q_e in a loop until it has the correct size.

Observing the number of times q_e is decremented through a control-flow

revealing side-channel reveals a bias in the most significant bits of

k. Depending on the curve this is either a negligible bias or a

significant bias large enough to reconstruct k with lattice reduction

methods. For SECP160R1, e.g., we find a bias of 15 bits.

How this vulnerability can be exploited

This issue can be reached with local access to the system, attack complexity is high, an attacker needs administrative privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity none, availability none.

CVSS metrics in full

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

  • Attack vector: Local — a local account, shell or session on the host is needed.
  • Attack complexity: High — the attacker first has to win a race, learn a secret or otherwise prepare the target.
  • Privileges required: High — administrative rights are needed first.
  • User interaction: None — nobody has to be tricked into anything.
  • Scope: Unchanged — the damage stays inside the vulnerable component.
  • Confidentiality impact: High — total loss, or loss the attacker controls.
  • Integrity impact: None.
  • Availability impact: None.

Weakness class

CVE-2024-1544 is classified as CWE-203: Observable Discrepancy. The product behaves differently or sends different responses under different circumstances in a way that is observable to an unauthorized actor.

Affected software

CVE-2024-1544 is recorded against 1 package.

  • wolfssl (fixed in 5.7.2)

Timeline and source

Published on 27 August 2024 and last revised on 17 June 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

github.com
github.com

Other advisories for this package

wolfssl 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-203: Observable Discrepancy) in other software:

CVE-2024-1544 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Severity MEDIUM
CVSS Score 4.1
CVSS Vector CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N
CWE CWE-203
Public Exploit ✅ No
Source NVD
Published 2024-08-27
Updated 2026-08-20
Modified 2026-06-17
Fix URL N/A

Affected Packages

Software From version Fixed in
wolfssl — 5.7.2

Similar Threats

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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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