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CVE-2022-23001— Sweet-B Library: Point compress/decompress using the wrong bit for sign

Quick assessment

Affected
Western Digital Sweet B Library
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Western Digital Sweet B是美国Western Digital公司的一个使用 NIST P-256 和 SECG secp256k1 曲线实现公钥椭圆曲线加密 (ECC) 的库。 Western Digital Sweet B library存在安全漏洞，该漏洞源于压缩或解压缩椭圆曲线点时，使用了错误的符号位选择。具有用户级别特权且没有其他用户帮助的攻击者可以在只知道公钥和库的情况下利用此漏洞。攻击者可能利用该漏洞在使用该库的应用程序中造成错误场景，从而对单个用户造成有限的拒绝服务。

CVSS 5.3 · Medium EPSS 0.70% · P51
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I. Basic Information for CVE-2022-23001

Vulnerability Information
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Vulnerability Title
Sweet-B Library: Point compress/decompress using the wrong bit for sign
Source: CVE Program / CVE List V5
Vulnerability Description
When compressing or decompressing elliptic curve points using the Sweet B library, an incorrect choice of sign bit is used. An attacker with user level privileges and no other user's assistance can exploit this vulnerability with only knowledge of the public key and the library. The resulting output may cause an error when used in other operations; for instance, verification of a valid signature under a decompressed public key may fail. This may be leveraged by an attacker to cause an error scenario in applications which use the library, resulting in a limited denial of service for an individual user. The scope of impact cannot extend to other components.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
数值计算不正确
Source: CVE Program / CVE List V5
Vulnerability Title
Western Digital Sweet B 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Western Digital Sweet B是美国Western Digital公司的一个使用 NIST P-256 和 SECG secp256k1 曲线实现公钥椭圆曲线加密 (ECC) 的库。 Western Digital Sweet B library存在安全漏洞，该漏洞源于压缩或解压缩椭圆曲线点时，使用了错误的符号位选择。具有用户级别特权且没有其他用户帮助的攻击者可以在只知道公钥和库的情况下利用此漏洞。攻击者可能利用该漏洞在使用该库的应用程序中造成错误场景，从而对单个用户造成有限的拒绝服务。
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

Vendor Product Affected Versions CPE Subscribe
Western Digital Sweet B Library Sweet B Library ~ v2 -

II. Public POCs for CVE-2022-23001

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III. Intelligence Information for CVE-2022-23001

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Other References for CVE-2022-23001 (1)

Same Patch Batch · Western Digital · 2022-07-29 · 4 CVEs total

CVE-2022-23002 5.3 MEDIUM Point Compression/Decompression of NIST P-256 points with X coordinate of zero
CVE-2022-23003 5.3 MEDIUM Shared secret or Point multiplication of NIST P-256 points with X coordinate of zero
CVE-2022-23004 5.3 MEDIUM Algorithm incorrectly returning error and Invalid unreduced value written to output buffer

IV. Related Vulnerabilities

Same product: Sweet B Library
Same vendor: Western Digital
Same weakness: CWE-682

V. Comments for CVE-2022-23001

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