CVE catalog

CVE-2024-1544

wolfssl: CVE-2024-1544

Severity: Medium
Published: Aug 27, 2024, 7:15:16 PM UTC
Source: [NVD] · [CVE record]
EPSS: 0.35% · Oct 25, 2026

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.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	wolfssl	sid	`5.9.2-1.2`	fixed
Debian	wolfssl	trixie	`5.7.2-0.1+deb13u2`	fixed
Debian	wolfssl	bookworm	`5.5.4-2+deb12u2`	vulnerable
Debian	wolfssl	bookworm-security	`5.5.4-2+deb12u3`	vulnerable

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	wolfssl	source	sid	`5.7.2-0.1`	not yet assigned	Not reported	[1081789]
Debian	wolfssl	source	trixie	`5.7.2-0.1`	not yet assigned	Not reported	[1081789]
Debian	wolfssl	source	bookworm	`(unfixed)`	not yet assigned	Not reported	[1081789]

[Debian bug #1081789]

Notes

[bookworm] wolfssl: Minor issue

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[libwolfssl35]Affected
Source package: [wolfssl]
Details (4)
- 5.5.4-2+deb12u2 · amd64 · bookworm
  Affected
  dsa · wolfssl · debian · bookworm; dsa · wolfssl · debian · 12
- 5.5.4-2+deb12u2 · arm64 · bookworm
  Affected
  dsa · wolfssl · debian · bookworm; dsa · wolfssl · debian · 12
- 5.5.4-2+deb12u3 · amd64 · bookworm-security
  Affected
  dsa · wolfssl · debian · bookworm; dsa · wolfssl · debian · 12
- 5.5.4-2+deb12u3 · arm64 · bookworm-security
  Affected
  dsa · wolfssl · debian · bookworm; dsa · wolfssl · debian · 12
[libwolfssl-dev]Affected
Source package: [wolfssl]
Details (4)
- 5.5.4-2+deb12u2 · amd64 · bookworm
  Affected
  dsa · wolfssl · debian · bookworm; dsa · wolfssl · debian · 12
- 5.5.4-2+deb12u2 · arm64 · bookworm
  Affected
  dsa · wolfssl · debian · bookworm; dsa · wolfssl · debian · 12
- 5.5.4-2+deb12u3 · amd64 · bookworm-security
  Affected
  dsa · wolfssl · debian · bookworm; dsa · wolfssl · debian · 12
- 5.5.4-2+deb12u3 · arm64 · bookworm-security
  Affected
  dsa · wolfssl · debian · bookworm; dsa · wolfssl · debian · 12

[Debian 13 (Trixie)]

[libwolfssl42t64]Fixed
Source package: [wolfssl]
Details (2)
- 5.7.2-0.1+deb13u1 · amd64 · trixie
  Fixed · Fixed: 5.7.2-0.1
  dsa · wolfssl · debian · 13
- 5.7.2-0.1+deb13u1 · arm64 · trixie
  Fixed · Fixed: 5.7.2-0.1
  dsa · wolfssl · debian · 13
[libwolfssl-dev]Fixed
Source package: [wolfssl]
Details (2)
- 5.7.2-0.1+deb13u1 · amd64 · trixie
  Fixed · Fixed: 5.7.2-0.1
  dsa · wolfssl · debian · 13
- 5.7.2-0.1+deb13u1 · arm64 · trixie
  Fixed · Fixed: 5.7.2-0.1
  dsa · wolfssl · debian · 13

Observed: Oct 27, 2026, 2:15:31 AM UTC

References

[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database]