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CVE-2018-15836

N/A
Published: September 26, 2018 at 09:00 PM UTC
Updated: June 17, 2026 at 01:43 AM UTC
1 product affected across 1 vendorOpenswan

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Severity
N/A
Exploit prediction
EPSS 2%

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Openswan· Xelerance
95%
v < 2.6.50.1
Affected range stops below 2.6.50.1, so it looks safe — our inference, not a vendor statement

References (3)

x_refsource_CONFIRMPatchVendor Advisory
Source: [email protected]
https://github.com/xelerance/Openswan/commit/0b460be9e287fd335c8ce58129c67bf06065ef51
x_refsource_CONFIRMPatchVendor Advisory
Source: [email protected]
https://github.com/xelerance/Openswan/commit/9eaa6c2a823c1d2b58913506a15f9474bf857a3d
Mailing Listx_refsource_MLISTRelease NotesVendor Advisory
Source: [email protected]
https://lists.openswan.org/pipermail/users/2018-August/023761.html

CVSS

5MEDIUM[email protected]
Confidentiality
NONE
Integrity
PARTIAL
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-347

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