CVE-2021-32815— Denial of service due to assertion failure in crwimage_int.cpp
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I. Basic Information for CVE-2021-32815
Vulnerability Information
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Vulnerability Title
Denial of service due to assertion failure in crwimage_int.cpp
Source: NVD (National Vulnerability Database)
Vulnerability Description
Exiv2 is a command-line utility and C++ library for reading, writing, deleting, and modifying the metadata of image files. The assertion failure is triggered when Exiv2 is used to modify 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. Note that this bug is only triggered when modifying 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 `fi`. ### Patches The bug is fixed in version v0.27.5. ### References Regression test and bug fix: #1739 ### For more information Please see our [security policy](https://github.com/Exiv2/exiv2/security/policy) for information about Exiv2 security.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
可达断言
Source: NVD (National Vulnerability Database)
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存在安全漏洞，该漏洞用于读取、写入、删除和修改映像文件的元数据。当使用Exiv2修改精心制作的映像文件的元数据时，会触发断言失败。如果攻击者可利用该漏洞可以诱骗受害者在一个精心制作的图像文件上运行Exiv2，那么攻击者可利用该漏洞可能会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
II. Public POCs for CVE-2021-32815
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- https://security.gentoo.org/glsa/202312-06vendor-advisory
- https://nvd.nist.gov/vuln/detail/CVE-2021-32815
Same Patch Batch · Exiv2 · 2021-08-09 · 11 CVEs total
| CVE-2021-34334 | 5.5 MEDIUM | Denial of service due to integer overflow in loop counter |
| 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
- CVE-2026-25884
Exiv2: Out-of-bounds read in CrwMap::decode0x0805 - CVE-2026-27596
Exiv2: Integer Underflow in LoaderNative::getData() Causes H - CVE-2026-27631
Exiv2: Uncaught exception - cannot create std::vector larger - CVE-2025-55304
Exiv2 has quadratic performance in ICC profile parsing in Jp - CVE-2025-54080
Exiv2 Segmentation Faults in Exiv2::EpsImage::writeMetadata(
Same vendor: Exiv2
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Exiv2: Out-of-bounds read in CrwMap::decode0x0805 - CVE-2026-27596
Exiv2: Integer Underflow in LoaderNative::getData() Causes H - CVE-2026-27631
Exiv2: Uncaught exception - cannot create std::vector larger - CVE-2025-55304
Exiv2 has quadratic performance in ICC profile parsing in Jp - CVE-2025-54080
Exiv2 Segmentation Faults in Exiv2::EpsImage::writeMetadata(
Same weakness: CWE-617
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