CVE-2021-29623

Exiv2 is a C++ library and a command-line utility to read, write, delete and modify Exif, IPTC, XMP and ICC image metadata. A read of uninitialized memory was found in Exiv2 versions v0.27.3 and earlier. Exiv2 is a command-line utility and C++ library for reading, writing, deleting, and modifying the metadata of image files. The read of uninitialized memory is triggered when Exiv2 is used to read the metadata of a crafted image file. An attacker could potentially exploit the vulnerability to leak a few bytes of stack memory, if they can trick the victim into running Exiv2 on a crafted image file. The bug is fixed in version v0.27.4.

Exiv2 is a Cross-platform C++ library and a command line utility to manage image metadata. It provides fast and easy read and write access to the Exif, IPTC and XMP metadata and the ICC Profile embedded within digital images in various formats.

Security Fix(es):

Exiv2 is a C++ library and a command-line utility to read, write, delete and modify Exif, IPTC, XMP and ICC image metadata. A read of uninitialized memory was found in Exiv2 versions v0.27.3 and earlier. Exiv2 is a command-line utility and C++ library for reading, writing, deleting, and modifying the metadata of image files. The read of uninitialized memory is triggered when Exiv2 is used to read the metadata of a crafted image file. An attacker could potentially exploit the vulnerability to leak a few bytes of stack memory, if they can trick the victim into running Exiv2 on a crafted image file. The bug is fixed in version v0.27.4.(CVE-2021-29623)

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.(CVE-2021-32617)

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 Rocky Linux 8.5 Release Notes linked from the References section.

Exiv2 is a C++ library and a command-line utility to read, write, delete and modify Exif, IPTC, XMP and ICC image metadata. A read of uninitialized memory was found in Exiv2 versions v0.27.3 and earlier. Exiv2 is a command-line utility and C++ library for reading, writing, deleting, and modifying the metadata of image files. The read of uninitialized memory is triggered when Exiv2 is used to read the metadata of a crafted image file. An attacker could potentially exploit the vulnerability to leak a few bytes of stack memory, if they can trick the victim into running Exiv2 on a crafted image file. The bug is fixed in version v0.27.4.

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 AlmaLinux Release Notes linked from the References section.

The updated packages fix security vulnerabilities:

Heap-based buffer overflow in Jp2Image::readMetadata(). (CVE-2021-3482)

Heap-based buffer overflow in Exiv2::Jp2Image::doWriteMetadata. (CVE-2021-29457)

Out-of-bounds read in Exiv2::Internal::CrwMap::encode. (CVE-2021-29458)

Exiv2 incorrectly handled certain files. An attacker could possibly use this issue to cause a denial of service. (CVE-2021-29463)

Exiv2 incorrectly handled certain files. An attacker could possibly use this issue to execute arbitrary code. (CVE-2021-29464)

Out-of-bounds read in Exiv2::Jp2Image::encodeJp2Header. (CVE-2021-29470)

Out-of-bounds read in Exiv2::Jp2Image::doWriteMetadata. (CVE-2021-29473)

Read of uninitialized memory may lead to information leak. (CVE-2021-29623)

DoS due to quadratic complexity in ProcessUTF8Portion. (CVE-2021-32617)

These are all security issues fixed in the exiv2-0.27.5-2.1 package on the GA media of openSUSE Tumbleweed.

This update for exiv2 fixes the following issues:

Updated to version 0.27.5 (jsc#PED-1393):

• CVE-2017-1000128: Fixed stack out of bounds read in JPEG2000 parser (bsc#1068871).
• CVE-2019-13108: Fixed integer overflow PngImage:readMetadata (bsc#1142675).
• CVE-2020-19716: Fixed buffer overflow vulnerability in the Databuf function in types.cpp (bsc#1188645).
• CVE-2021-29457: Fixed heap buffer overflow when write metadata into a crafted image file (bsc#1185002).
• CVE-2021-29470: Fixed out-of-bounds read in Exiv2:Jp2Image:encodeJp2Header (bsc#1185447).
• CVE-2021-29623: Fixed read of uninitialized memory (bsc#1186053).
• CVE-2021-31291: Fixed heap-based buffer overflow in jp2image.cpp (bsc#1188733).
• CVE-2021-32617: Fixed denial of service due to inefficient algorithm (bsc#1186192).
• CVE-2021-37620: Fixed out-of-bounds read in XmpTextValue:read() (bsc#1189332).
• CVE-2021-37621: Fixed DoS due to infinite loop in Image:printIFDStructure (bsc#1189333).
• CVE-2021-37622: Fixed DoS due to infinite loop in JpegBase:printStructure (bsc#1189334)
• CVE-2021-34334: Fixed DoS due to integer overflow in loop counter(bsc#1189338)
• CVE-2021-37623: Fixed DoS due to infinite loop in JpegBase:printStructure (bsc#1189335)
• CVE-2021-29463: Fixed out-of-bounds read in webpimage.cpp (bsc#1185913).
• CVE-2021-34334: Fixed DoS due to integer overflow in loop counter (bsc#1189338)
• CVE-2019-13111: Fixed integer overflow in WebPImage:decodeChunks that lead to denial of service (bsc#1142679)
• CVE-2021-29463: Fixed an out-of-bounds read was found in webpimage.cpp (bsc#1185913)

Bugfixes:

• Fixed build using GCC 11 (bsc#1185218).

A new libexiv2-2_27 shared library is shipped, the libexiv2-2_26 is provided only for compatibility now.

Please recompile your applications using the exiv2 library.

It was discovered that Exiv2 incorrectly handled certain files. An attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 20.04 LTS, Ubuntu 20.10 and Ubuntu 21.04. (CVE-2021-29463)

It was discovered that Exiv2 incorrectly handled certain files. An attacker could possibly use this issue to execute arbitrary code. This issue only affected Ubuntu 20.04 LTS, Ubuntu 20.10 and Ubuntu 21.04. (CVE-2021-29464)

It was discovered that Exiv2 incorrectly handled certain files. An attacker could possibly use this issue to cause a denial of service. (CVE-2021-29473, CVE-2021-32617)

It was discovered that Exiv2 incorrectly handled certain files. An attacker could possibly use this issue to expose sensitive information. This issue only affected Ubuntu 20.04 LTS, Ubuntu 20.10 and Ubuntu 21.04. (CVE-2021-29623)