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CVE-2021-34334— Denial of service due to integer overflow in loop counter

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中存在安全漏洞，攻击者可利用该漏洞导致拒绝服务。

CVSS 5.5 · Medium EPSS 1.11% · P65

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking
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I. Basic Information for CVE-2021-34334

Vulnerability Information
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Vulnerability Title
Denial of service due to integer overflow in loop counter
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 infinite loop is triggered when Exiv2 is used to read the metadata of 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 v0.27.5.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
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
Exiv2 安全漏洞
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中存在安全漏洞，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 <= 0.27.4 -

II. Public POCs for CVE-2021-34334

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III. Intelligence Information for CVE-2021-34334

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Patches & Fixes for CVE-2021-34334 (1)

Vendor Advisories for CVE-2021-34334 (2)

Mailing List Discussions for CVE-2021-34334 (3)

Same Patch Batch · Exiv2 · 2021-08-09 · 11 CVEs total

CVE-2021-32815 5.5 MEDIUM Denial of service due to assertion failure in crwimage_int.cpp
CVE-2021-37616 5.5 MEDIUM Null pointer dereference in Exiv2::Internal::resolveLens0x8ff
CVE-2021-37621 5.5 MEDIUM Denial of service due to infinite loop in Image::printIFDStructure
CVE-2021-37622 5.5 MEDIUM Denial of service due to infinite loop in JpegBase::printStructure (#1)
CVE-2021-37623 5.5 MEDIUM Denial of service due to infinite loop in JpegBase::printStructure (#2)
CVE-2021-34335 4.7 MEDIUM Denial of service due to FPE in Exiv2::Internal::resolveLens0xffff
CVE-2021-37615 4.7 MEDIUM Null pointer dereference in Exiv2::Internal::resolveLens0x319
CVE-2021-37618 4.7 MEDIUM Out-of-bounds read in Exiv2::Jp2Image::printStructure
CVE-2021-37619 4.7 MEDIUM Out-of-bounds read in Exiv2::Jp2Image::encodeJp2Header
CVE-2021-37620 4.7 MEDIUM Out-of-bounds read in XmpTextValue::read()

IV. Related Vulnerabilities

Same product: exiv2
Same vendor: Exiv2
Same weakness: CWE-835

V. Comments for CVE-2021-34334

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