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CVE-2021-32617— Denial of service in Exiv2

Quick assessment

Affected
Exiv2 exiv2
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.

Exiv2是Andreas Huggel个人开发者的一套用于管理图像元数据的C++库和命令行应用程序。该产品提供了读取和写入EXIF、IPTC和XMP等多种格式图像元数据的功能。 Exiv2 v0.27.3版本及之前版本存在资源管理错误漏洞，攻击者可利用该漏洞导致拒绝服务。

CVSS 4.7 · Medium EPSS 1.17% · P66

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking
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I. Basic Information for CVE-2021-32617

Vulnerability Information
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Vulnerability Title
Denial of service in Exiv2
Source: CVE Program / CVE List V5
Vulnerability Description
Exiv2 is a command-line utility and C++ library for reading, writing, deleting, and modifying the metadata of image files. An inefficient algorithm (quadratic complexity) was found in Exiv2 versions v0.27.3 and earlier. The inefficient algorithm is triggered when Exiv2 is used to write metadata into a crafted image file. An attacker could potentially exploit the vulnerability to cause a denial of service, if they can trick the victim into running Exiv2 on a crafted image file. The bug is fixed in version v0.27.4. Note that this bug is only triggered when _writing_ the metadata, which is a less frequently used Exiv2 operation than _reading_ the metadata. For example, to trigger the bug in the Exiv2 command-line application, you need to add an extra command-line argument such as `rm`.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
未加控制的资源消耗(资源穷尽)
Source: CVE Program / CVE List V5
Vulnerability Title
Exiv2 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Exiv2是Andreas Huggel个人开发者的一套用于管理图像元数据的C++库和命令行应用程序。该产品提供了读取和写入EXIF、IPTC和XMP等多种格式图像元数据的功能。 Exiv2 v0.27.3版本及之前版本存在资源管理错误漏洞，攻击者可利用该漏洞导致拒绝服务。
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
Exiv2 exiv2 <= 0.27.3 -

II. Public POCs for CVE-2021-32617

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III. Intelligence Information for CVE-2021-32617

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Patches & Fixes for CVE-2021-32617 (1)

Vendor Advisories for CVE-2021-32617 (2)

Mailing List Discussions for CVE-2021-32617 (4)

IV. Related Vulnerabilities

Same product: exiv2
Same vendor: Exiv2
Same weakness: CWE-400

V. Comments for CVE-2021-32617

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