CVSS 3.0
7.5 highCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:NCVE-2018-15836
In verify_signed_hash() in lib/liboswkeys/signatures.c in Openswan before 2.6.50.1, the RSA implementation does not verify the value of padding string during PKCS#1 v1.5 signature verification. Consequently, a remote attacker can forge signatures when small public exponents are being used. IKEv2 signature verification is affected when RAW RSA keys are used.
Severity
- EPSS
- 1.5% chance of exploitation in the next 30 days; higher than 74% of CVEs (scores of 2026-10-31)
- CWE
- CWE-347
- Published
- Modified
- Record from
- the NVD, synced
Affected
- xelerance:openswan
References
- https://github.com/xelerance/Openswan/commit/0b460be9e287fd335c8ce58129c67bf06065ef51
- https://github.com/xelerance/Openswan/commit/9eaa6c2a823c1d2b58913506a15f9474bf857a3d
- https://lists.openswan.org/pipermail/users/2018-August/023761.html
- https://github.com/xelerance/Openswan/commit/0b460be9e287fd335c8ce58129c67bf06065ef51
- https://github.com/xelerance/Openswan/commit/9eaa6c2a823c1d2b58913506a15f9474bf857a3d