The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - An invalid memory access in the decode function in iptc.cpp of Exiv2 0.27.99.0 allows attackers to cause a     denial of service (DOS) via a crafted tif file. (CVE-2020-18773)

Note that Nessus relies on the presence of the package as reported by the vendor.

The remote host is affected by the vulnerability described in GLSA-202312-06 (Exiv2: Multiple Vulnerabilities)

  - Exiv2 0.27.99.0 has a global buffer over-read in Exiv2::Internal::Nikon1MakerNote::print0x0088 in     nikonmn_int.cpp which can result in an information leak. (CVE-2020-18771)

  - An invalid memory access in the decode function in iptc.cpp of Exiv2 0.27.99.0 allows attackers to cause a     denial of service (DOS) via a crafted tif file. (CVE-2020-18773)

  - A float point exception in the printLong function in tags_int.cpp of Exiv2 0.27.99.0 allows attackers to     cause a denial of service (DOS) via a crafted tif file. (CVE-2020-18774)

  - An uncontrolled memory allocation in DataBufdata(subBox.length-sizeof(box)) function of Exiv2 0.27 allows     attackers to cause a denial of service (DOS) via a crafted input. (CVE-2020-18899)

  - Exiv2 is a command-line utility and C++ library for reading, writing, deleting, and modifying the metadata     of image files. A heap buffer overflow was found in Exiv2 versions v0.27.3 and earlier. The heap overflow     is triggered when Exiv2 is used to write metadata into a crafted image file. An attacker could potentially     exploit the vulnerability to gain code execution, if they can trick the victim into running Exiv2 on a     crafted image file. 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 `insert`. The bug is     fixed in version v0.27.4. (CVE-2021-29457)

  - Exiv2 is a command-line utility and C++ library for reading, writing, deleting, and modifying the metadata     of image files. An out-of-bounds read was found in Exiv2 versions v0.27.3 and earlier. The out-of-bounds     read 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 by crashing Exiv2, if they can trick     the victim into running Exiv2 on a crafted image file. 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 insert. The bug is fixed in version v0.27.4. (CVE-2021-29458, CVE-2021-29470)

  - Exiv2 is a command-line utility and C++ library for reading, writing, deleting, and modifying the metadata     of image files. An out-of-bounds read was found in Exiv2 versions v0.27.3 and earlier. The out-of-bounds     read 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 by crashing Exiv2, if they can trick     the victim into running Exiv2 on a crafted image file. 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 `insert`. The bug is fixed in version v0.27.4. (CVE-2021-29463)

  - Exiv2 is a command-line utility and C++ library for reading, writing, deleting, and modifying the metadata     of image files. A heap buffer overflow was found in Exiv2 versions v0.27.3 and earlier. The heap overflow     is triggered when Exiv2 is used to write metadata into a crafted image file. An attacker could potentially     exploit the vulnerability to gain code execution, if they can trick the victim into running Exiv2 on a     crafted image file. 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 `insert`. The bug is     fixed in version v0.27.4. (CVE-2021-29464)

  - Exiv2 is a C++ library and a command-line utility to read, write, delete and modify Exif, IPTC, XMP and     ICC image metadata. An out-of-bounds read 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 out-of-bounds read 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 by crashing Exiv2, if     they can trick the victim into running Exiv2 on a crafted image file. 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 `insert`. The bug is fixed in version v0.27.4. Please see our security policy for     information about Exiv2 security. (CVE-2021-29473)

  - 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)

  - Rejected reason: DO NOT USE THIS CANDIDATE NUMBER. ConsultIDs: CVE-2021-29457. Reason: This candidate is a     duplicate of CVE-2021-29457. Notes: All CVE users should reference CVE-2021-29457 instead of this     candidate. All references and descriptions in this candidate have been removed to prevent accidental usage     (CVE-2021-31291)

  - An integer overflow in CrwMap::encode0x1810 of Exiv2 0.27.3 allows attackers to trigger a heap-based     buffer overflow and cause a denial of service (DOS) via crafted metadata. (CVE-2021-31292)

  - 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 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.
    (CVE-2021-32815)

  - 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.
    (CVE-2021-34334)

  - Exiv2 is a command-line utility and C++ library for reading, writing, deleting, and modifying the metadata     of image files. A floating point exception (FPE) due to an integer divide by zero was found in Exiv2     versions v0.27.4 and earlier. The FPE is triggered when Exiv2 is used to print 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     printing the interpreted (translated) data, which is a less frequently used Exiv2 operation that requires     an extra command line option (`-p t` or `-P t`). The bug is fixed in version v0.27.5. (CVE-2021-34335)

  - Exiv2 is a command-line utility and C++ library for reading, writing, deleting, and modifying the metadata     of image files. A null pointer dereference was found in Exiv2 versions v0.27.4 and earlier. The null     pointer dereference is triggered when Exiv2 is used to print 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 printing the     interpreted (translated) data, which is a less frequently used Exiv2 operation that requires an extra     command line option (`-p t` or `-P t`). The bug is fixed in version v0.27.5. (CVE-2021-37615,     CVE-2021-37616)

  - Exiv2 is a command-line utility and C++ library for reading, writing, deleting, and modifying the metadata     of image files. An out-of-bounds read was found in Exiv2 versions v0.27.4 and earlier. The out-of-bounds     read is triggered when Exiv2 is used to print 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 printing the image ICC     profile, which is a less frequently used Exiv2 operation that requires an extra command line option (`-p     C`). The bug is fixed in version v0.27.5. (CVE-2021-37618)

  - Exiv2 is a command-line utility and C++ library for reading, writing, deleting, and modifying the metadata     of image files. An out-of-bounds read was found in Exiv2 versions v0.27.4 and earlier. The out-of-bounds     read 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 by crashing Exiv2, if they can trick     the victim into running Exiv2 on a crafted image file. 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 insert. The bug is fixed in version v0.27.5. (CVE-2021-37619)

  - Exiv2 is a command-line utility and C++ library for reading, writing, deleting, and modifying the metadata     of image files. An out-of-bounds read was found in Exiv2 versions v0.27.4 and earlier. The out-of-bounds     read 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. (CVE-2021-37620)

  - Exiv2 is a command-line utility and C++ library for reading, writing, deleting, and modifying the metadata     of image files. An infinite loop was found in Exiv2 versions v0.27.4 and earlier. The infinite loop is     triggered when Exiv2 is used to print 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 printing the image ICC profile, which is a     less frequently used Exiv2 operation that requires an extra command line option (`-p C`). The bug is fixed     in version v0.27.5. (CVE-2021-37621)

  - Exiv2 is a command-line utility and C++ library for reading, writing, deleting, and modifying the metadata     of image files. An infinite loop was found in Exiv2 versions v0.27.4 and earlier. The infinite loop 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 deleting the IPTC data, which is a less     frequently used Exiv2 operation that requires an extra command line option (`-d I rm`). The bug is fixed     in version v0.27.5. (CVE-2021-37622, CVE-2021-37623)

  - Exiv2 is a C++ library and a command-line utility to read, write, delete and modify Exif, IPTC, XMP and     ICC image metadata. An out-of-bounds write was found in Exiv2 version v0.28.0. The vulnerable function,     `BmffImage::brotliUncompress`, is new in v0.28.0, so earlier versions of Exiv2 are _not_ affected. The     out-of-bounds write is triggered when Exiv2 is used to read the metadata of a crafted image file. An     attacker could potentially exploit the vulnerability to gain code execution, if they can trick the victim     into running Exiv2 on a crafted image file. This bug is fixed in version v0.28.1. Users are advised to     upgrade. There are no known workarounds for this vulnerability. (CVE-2023-44398)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Published	Updated	Severity
223424	Linux Distros Unpatched Vulnerability : CVE-2020-18773	Nessus	Misc.	3/4/2025	3/4/2025	medium
187205	GLSA-202312-06 : Exiv2: Multiple Vulnerabilities	Nessus	Gentoo Local Security Checks	12/22/2023	12/22/2023	high

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