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CVE-2022-4087— iPXE TLS tls.c tls_new_ciphertext information exposure

Quick assessment

Affected
unspecified iPXE
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.

iPXE是iPXE开源的一种网络引导程序。 iPXE 存在安全漏洞，该漏洞源于组件TLS的文件src/net/tls.c的函数tls_new_ciphertext存在问题，对参数 pad_len 的操作会通过差异导致信息暴露。

CVSS 2.6 · Low EPSS 0.50% · P42

Possible ATT&CK Techniques 1 AI

T1005 · Data from Local System
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I. Basic Information for CVE-2022-4087

Vulnerability Information
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Vulnerability Title
iPXE TLS tls.c tls_new_ciphertext information exposure
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability was found in iPXE. It has been declared as problematic. This vulnerability affects the function tls_new_ciphertext of the file src/net/tls.c of the component TLS. The manipulation of the argument pad_len leads to information exposure through discrepancy. The name of the patch is 186306d6199096b7a7c4b4574d4be8cdb8426729. It is recommended to apply a patch to fix this issue. VDB-214054 is the identifier assigned to this vulnerability.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
访问控制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
iPXE 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
iPXE是iPXE开源的一种网络引导程序。 iPXE 存在安全漏洞，该漏洞源于组件TLS的文件src/net/tls.c的函数tls_new_ciphertext存在问题，对参数 pad_len 的操作会通过差异导致信息暴露。
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
unspecified iPXE n/a -

II. Public POCs for CVE-2022-4087

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III. Intelligence Information for CVE-2022-4087

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Patches & Fixes for CVE-2022-4087 (1)

Vendor Advisories for CVE-2022-4087 (1)

IV. Related Vulnerabilities

Same vendor: unspecified
Same weakness: CWE-284

V. Comments for CVE-2022-4087

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