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CVE-2025-59058— httpsig-rs's HMAC verification is vulnerable to timing attack

Quick assessment

Affected
junkurihara httpsig-rs
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.

httpsig-rs是Jun Kurihara个人开发者的一个Rust库。 httpsig-rs 0.0.19之前版本存在安全漏洞，该漏洞源于HMAC签名比较未采用时序安全方式，可能导致攻击者伪造签名。

CVSS 5.9 · Medium EPSS 0.28% · P19
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I. Basic Information for CVE-2025-59058

Vulnerability Information
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Vulnerability Title
httpsig-rs's HMAC verification is vulnerable to timing attack
Source: CVE Program / CVE List V5
Vulnerability Description
httpsig-rs is a Rust implementation of IETF RFC 9421 http message signatures. Prior to version 0.0.19, the HMAC signature comparison is not timing-safe. This makes anyone who uses HS256 signature verification vulnerable to a timing attack that allows the attacker to forge a signature. Version 0.0.19 fixes the issue.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
通过时间差异性导致的信息暴露
Source: CVE Program / CVE List V5
Vulnerability Title
httpsig-rs 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
httpsig-rs是Jun Kurihara个人开发者的一个Rust库。 httpsig-rs 0.0.19之前版本存在安全漏洞，该漏洞源于HMAC签名比较未采用时序安全方式，可能导致攻击者伪造签名。
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
junkurihara httpsig-rs < 0.0.19 -

II. Public POCs for CVE-2025-59058

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III. Intelligence Information for CVE-2025-59058

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IV. Related Vulnerabilities

Same product: httpsig-rs
Same vendor: junkurihara
Same weakness: CWE-208

V. Comments for CVE-2025-59058

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