CVE-2018-0733— Incorrect CRYPTO_memcmp on HP-UX PA-RISC
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I. Basic Information for CVE-2018-0733
Vulnerability Information
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Vulnerability Title
Incorrect CRYPTO_memcmp on HP-UX PA-RISC
Source: NVD (National Vulnerability Database)
Vulnerability Description
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).
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
OpenSSL 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
OpenSSL是OpenSSL团队开发的一个开源的能够实现安全套接层（SSL v2/v3）和安全传输层（TLS v1）协议的通用加密库，它支持多种加密算法，包括对称密码、哈希算法、安全散列算法等。 OpenSSL 1.1.0版本至1.1.0g版本中存在安全漏洞。攻击者可利用该漏洞伪造信息。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2018-0733
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- https://www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.htmlx_refsource_CONFIRM
- https://www.tenable.com/security/tns-2018-06x_refsource_CONFIRM
- https://www.tenable.com/security/tns-2018-07x_refsource_CONFIRM
- https://www.tenable.com/security/tns-2018-04x_refsource_CONFIRM
- https://security.netapp.com/advisory/ntap-20180330-0002/x_refsource_CONFIRM
- http://www.oracle.com/technetwork/security-advisory/cpujul2018-4258247.htmlx_refsource_CONFIRM
- https://www.openssl.org/news/secadv/20180327.txtx_refsource_CONFIRM
- http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.htmlx_refsource_CONFIRM
- https://nvd.nist.gov/vuln/detail/CVE-2018-0733
IV. Related Vulnerabilities
Same product: OpenSSL
- CVE-2026-31790
Incorrect Failure Handling in RSA KEM RSASVE Encapsulation - CVE-2026-31789
Heap Buffer Overflow in Hexadecimal Conversion - CVE-2026-28390
Possible NULL Dereference When Processing CMS KeyTransportRe - CVE-2026-28389
Possible NULL Dereference When Processing CMS KeyAgreeRecipi - CVE-2026-28388
NULL Pointer Dereference When Processing a Delta CRL
Same vendor: OpenSSL
- CVE-2026-31790
Incorrect Failure Handling in RSA KEM RSASVE Encapsulation - CVE-2026-31789
Heap Buffer Overflow in Hexadecimal Conversion - CVE-2026-28390
Possible NULL Dereference When Processing CMS KeyTransportRe - CVE-2026-28389
Possible NULL Dereference When Processing CMS KeyAgreeRecipi - CVE-2026-28388
NULL Pointer Dereference When Processing a Delta CRL
V. Comments for CVE-2018-0733
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