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CVE-2025-32029— ts-asn1-der has Incorrect DER Encoding of Numbers Leading to Denial of Service and Incorrect Value Representation

Quick assessment

Affected
ApelegHQ ts-asn1-der
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.

ts-asn1-der是Apeleg开源的一组实用程序类，用于按照 DER 规则对 ASN.1 数据进行编码。 ts-asn1-der 1.0.4之前版本存在安全漏洞，该漏洞源于数字DER编码错误，可能导致无限循环。

AI Predicted 7.5 Difficulty: Easy EPSS 0.23% · P13

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking
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I. Basic Information for CVE-2025-32029

Vulnerability Information
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Vulnerability Title
ts-asn1-der has Incorrect DER Encoding of Numbers Leading to Denial of Service and Incorrect Value Representation
Source: CVE Program / CVE List V5
Vulnerability Description
ts-asn1-der is a collection of utility classes to encode ASN.1 data following DER rule. Incorrect number DER encoding can lead to denial on service for absolute values in the range 2**31 -- 2**32 - 1. The arithmetic in the numBitLen didn't take into account that values in this range could result in a negative result upon applying the >> operator, leading to an infinite loop. The issue is patched in version 1.0.4. If upgrading is not an option, the issue can be mitigated by validating inputs to Asn1Integer to ensure that they are not smaller than -2**31 + 1 and no larger than 2**31 - 1.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
不可达退出条件的循环(无限循环)
Source: CVE Program / CVE List V5
Vulnerability Title
ts-asn1-der 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
ts-asn1-der是Apeleg开源的一组实用程序类，用于按照 DER 规则对 ASN.1 数据进行编码。 ts-asn1-der 1.0.4之前版本存在安全漏洞，该漏洞源于数字DER编码错误，可能导致无限循环。
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
ApelegHQ ts-asn1-der < 1.0.4 -

II. Public POCs for CVE-2025-32029

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III. Intelligence Information for CVE-2025-32029

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IV. Related Vulnerabilities

Same weakness: CWE-835

V. Comments for CVE-2025-32029

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