# CVE-2021-29470: exiv2: Exiv2 is a C++ library to access image metadata, supporting read and write access to the Exif, IPTC and XMP metadata,...

CVE-2021-29470 is fixed in 5 products on 1 platform, first by exiv2 0.27.2-8ubuntu2.2, released April 23, 2021. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2021-29470
- Priority: High
- CVSS: 7.8 (Moderate)
- EPSS: 0.0157
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Apr 23, 2021

## Description

Exiv2 is a C++ library to access image metadata, supporting read and write access to the Exif, IPTC and XMP metadata, Exif MakerNote support, extract and delete methods for Exif thumbnails, classes to access Ifd, and support for various image formats.  The following packages have been upgraded to a later upstream version: exiv2 (0.27.4). (BZ#1989860)  Security Fix(es):  * exiv2: Heap-based buffer overflow in Jp2Image::readMetadata() (CVE-2021-3482)  * exiv2: Heap-based buffer overflow in Exiv2::Jp2Image::doWriteMetadata (CVE-2021-29457)  * exiv2: Out-of-bounds read in Exiv2::Internal::CrwMap::encode (CVE-2021-29458)  * exiv2: Heap-based buffer overflow in Exiv2::Jp2Image::encodeJp2Header (CVE-2021-29464)  * exiv2: Out-of-bounds read in Exiv2::Jp2Image::encodeJp2Header (CVE-2021-29470)  * exiv2: Out-of-bounds read in Exiv2::Jp2Image::doWriteMetadata (CVE-2021-29473)  * exiv2: Integer overflow in CrwMap:encode0x1810 leading to heap-based buffer overflow and DoS (CVE-2021-31292)  * exiv2: Out-of-bounds read in Exiv2::WebPImage::doWriteMetadata (CVE-2021-29463)  * exiv2: Use of uninitialized memory in isWebPType() may lead to information leak (CVE-2021-29623)  * exiv2: DoS due to quadratic complexity in ProcessUTF8Portion (CVE-2021-32617)  * exiv2: Out-of-bounds read in Exiv2::Jp2Image::printStructure (CVE-2021-37618)  * exiv2: Out-of-bounds read in Exiv2::Jp2Image::encodeJp2Header (CVE-2021-37619)  For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.  Additional Changes:  For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.5 Release Notes linked from the References section.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | exiv2 RHEL 8 | 0:0.27.4-5.el8 | [RHSA-2021:4173](https://patchblox.com/security/data/fix/linux/rhsa-2021-4173.md) | Nov 9, 2021 |
| Linux | exiv2 Ubuntu 20.04 LTS (focal) | 0.27.2-8ubuntu2.2 | [exiv2 0.27.2-8ubuntu2.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-exiv2-0.27.2-8ubuntu2.2.md) | Apr 23, 2021 |
| Linux | exiv2 almalinux 8 | 0.27.4-5.el8 | [ALSA-2021:4173](https://patchblox.com/security/data/fix/linux/alsa-2021-4173.md) | Nov 9, 2021 |
| Linux | exiv2 rocky 8 | 0:0.27.4-5.el8 | [RLSA-2021:4173](https://patchblox.com/security/data/fix/linux/rlsa-2021-4173.md) | Nov 9, 2021 |
| Linux | exiv2-devel RHEL 8 | 0:0.27.4-5.el8 | [RHSA-2021:4173](https://patchblox.com/security/data/fix/linux/rhsa-2021-4173.md) | Nov 9, 2021 |
| Linux | exiv2-devel almalinux 8 | 0.27.4-5.el8 | [ALSA-2021:4173](https://patchblox.com/security/data/fix/linux/alsa-2021-4173.md) | Nov 9, 2021 |
| Linux | exiv2-doc RHEL 8 | 0:0.27.4-5.el8 | [RHSA-2021:4173](https://patchblox.com/security/data/fix/linux/rhsa-2021-4173.md) | Nov 9, 2021 |
| Linux | exiv2-doc almalinux 8 | 0.27.4-5.el8 | [ALSA-2021:4173](https://patchblox.com/security/data/fix/linux/alsa-2021-4173.md) | Nov 9, 2021 |
| Linux | exiv2-libs RHEL 8 | 0:0.27.4-5.el8 | [RHSA-2021:4173](https://patchblox.com/security/data/fix/linux/rhsa-2021-4173.md) | Nov 9, 2021 |
| Linux | exiv2-libs almalinux 8 | 0.27.4-5.el8 | [ALSA-2021:4173](https://patchblox.com/security/data/fix/linux/alsa-2021-4173.md) | Nov 9, 2021 |
| Linux | libexiv2-27 Ubuntu 20.04 LTS (focal) | 0.27.2-8ubuntu2.2 | [libexiv2-27 0.27.2-8ubuntu2.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libexiv2-27-0.27.2-8ubuntu2.2.md) | Apr 23, 2021 |

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