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CVE-2018-12435

N/A

Published: June 15, 2018 at 02:00 AM UTC

Updated: June 17, 2026 at 01:37 AM UTC

1 product affected across 1 vendorBotan

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Severity

N/A

Exploit prediction

EPSS 0.5%

Description

Botan 2.5.0 through 2.6.0 before 2.7.0 allows a memory-cache side-channel attack on ECDSA signatures, aka the Return Of the Hidden Number Problem or ROHNP, related to dsa/dsa.cpp, ec_group/ec_group.cpp, and ecdsa/ecdsa.cpp. To discover an ECDSA key, the attacker needs access to either the local machine or a different virtual machine on the same physical host.

Affected

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

Botan · Botan Project

95%

2.5.0 ≤ v ≤ 2.7.0

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

https://github.com/randombit/botan/commit/48fc8df51d99f9d8ba251219367b3d629cc848e3

References (3)

x_refsource_CONFIRMThird Party Advisory

Source: [email protected]

https://botan.randombit.net/security.html

x_refsource_CONFIRMPatchThird Party Advisory

Source: [email protected]

https://github.com/randombit/botan/commit/48fc8df51d99f9d8ba251219367b3d629cc848e3

x_refsource_MISCExploitThird Party Advisory

Source: [email protected]

https://www.nccgroup.trust/us/our-research/technical-advisory-return-of-the-hidden-number-problem/

CVSS

1.9LOW[email protected]

Confidentiality: PARTIAL
Integrity: NONE
Availability: NONE

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-200

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