CVE-2018-0733 · threatengine.sh

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CVE-2018-0733

Because of an implementation bug the PA-RISC CRYPTO_memcmp function is effectively reduced to only comparing the least s

Because of an implementation bug the PA-RISC CRYPTO_memcmp function is effectively reduced to only comparing the least significant bit of each byte. This allows an attacker to forge messages that would be considered as authenticated in an amount of tries lower than that guaranteed by the security claims of the scheme. The module can only be compiled by the HP-UX assembler, so that only HP-UX PA-RISC targets are affected.

Fixed in OpenSSL 1.1.0h (Affected 1.1.0-1.1.0g).

MEDIUM · CVSS 5.9 EPSS 0.02235

Monitor

No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence

Sigma rules0 YARA rules0

▤

Affected Products & Versions

1

openssl>= 1.1.0 and <= 1.1.0g

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Scoring & Timeline

5.9

MEDIUM · CVSS v3.0 · openssl-security@openssl.org

View on NVD

Attack Vector

Network Adjacent Local Physical

Attack Complexity

Low High

Privileges Required

None Low High

User Interaction

None Required

Scope

Unchanged Changed

Confidentiality

None Low High

Integrity

None Low High

Availability

None Low High

Published to NVD27 Mar 2018 · 09:29 PM

CVSS VectorCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

🔗

References & Sources

14

Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.

http://www.oracle.com/technetwork/security-advisory/cpujul2018-4258247.html

http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html

http://www.securityfocus.com/bid/103517Third Party AdvisoryVDB Entry

http://www.securitytracker.com/id/1040576Third Party AdvisoryVDB Entry

https://git.openssl.org/gitweb/?p=openssl.git

https://security.gentoo.org/glsa/201811-21

Show all 14 references

https://security.netapp.com/advisory/ntap-20180330-0002/Third Party Advisory

https://www.openssl.org/news/secadv/20180327.txtVendor Advisory

https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html

https://www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.html

https://www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.html

https://www.tenable.com/security/tns-2018-04

https://www.tenable.com/security/tns-2018-06

https://www.tenable.com/security/tns-2018-07

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