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CVE-2023-1732— Improper random reading in CIRCL

CVSS 5.3 · Medium EPSS 0.34% · P56
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I. Basic Information for CVE-2023-1732

Vulnerability Information
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Vulnerability Title
Improper random reading in CIRCL
Source: NVD (National Vulnerability Database)
Vulnerability Description
When sampling randomness for a shared secret, the implementation of Kyber and FrodoKEM, did not check whether crypto/rand.Read() returns an error. In rare deployment cases (error thrown by the Read() function), this could lead to a predictable shared secret. The tkn20 and blindrsa components did not check whether enough randomness was returned from the user provided randomness source. Typically the user provides crypto/rand.Reader, which in the vast majority of cases will always return the right number random bytes. In the cases where it does not, or the user provides a source that does not, the blinding for blindrsa is weak and integrity of the plaintext is not ensured in tkn20.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:H/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
输入验证不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
CIRCL 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
CIRCL是Cloudflare开源的一个用 Go 编写的加密原语集合。 CIRCL 存在安全漏洞，该漏洞源于 tkn20 和 blindrsa 组件不检查用户提供的随机源是否返回了足够的随机性。
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

VendorProductAffected VersionsCPESubscribe
CloudflareCIRCL 0 ~ <1.3.3 -

II. Public POCs for CVE-2023-1732

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III. Intelligence Information for CVE-2023-1732

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IV. Related Vulnerabilities

Same product: CIRCL
Same vendor: Cloudflare
Same weakness: CWE-20

V. Comments for CVE-2023-1732

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