CVE-2021-29463

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Source
https://nvd.nist.gov/vuln/detail/CVE-2021-29463
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-29463.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2021-29463
Downstream
Related
Published
2021-04-30T19:15:07Z
Modified
2025-10-21T06:05:58.494474Z
Severity
  • 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H CVSS Calculator
Summary
[none]
Details

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.

References

Affected packages

Git / github.com/exiv2/exiv2

Affected ranges

Type
GIT
Repo
https://github.com/exiv2/exiv2
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
783b3a6ff15ed6f82a8f8e6c8a6f3b84a9b04d4b

Affected versions

0.*

0.27
0.27-RC2
0.27-RC3
0.27.1

v0.*

v0.10
v0.11
v0.12
v0.13
v0.14
v0.15
v0.16
v0.16-pre1
v0.17
v0.17.1
v0.18
v0.18-pre1
v0.18-pre2
v0.18.1
v0.18.2
v0.19
v0.20
v0.21
v0.21.1
v0.22
v0.23
v0.23.1
v0.24
v0.25
v0.26
v0.27-RC1
v0.27.0
v0.27.1
v0.27.1-RC1
v0.27.2
v0.27.2-RC1
v0.27.2-RC2
v0.27.2-RC3
v0.27.3
v0.27.3-RC1
v0.27.3-RC2
v0.27.4-RC1
v0.27.4-RC2
v0.3
v0.4
v0.5
v0.6
v0.6.1
v0.6.2
v0.7
v0.8
v0.9
v0.9.1

Database specific

vanir_signatures

[
    {
        "source": "https://github.com/exiv2/exiv2/commit/783b3a6ff15ed6f82a8f8e6c8a6f3b84a9b04d4b",
        "signature_version": "v1",
        "target": {
            "file": "src/webpimage.cpp",
            "function": "WebPImage::doWriteMetadata"
        },
        "digest": {
            "length": 7548.0,
            "function_hash": "223643837117933804987609948669302438420"
        },
        "deprecated": false,
        "signature_type": "Function",
        "id": "CVE-2021-29463-08d0ca72"
    },
    {
        "source": "https://github.com/exiv2/exiv2/commit/783b3a6ff15ed6f82a8f8e6c8a6f3b84a9b04d4b",
        "signature_version": "v1",
        "target": {
            "file": "src/webpimage.cpp"
        },
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
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                "130169479202915172577343873566785585944",
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                "17869878351655099588526059598042719053",
                "120134026286219232254707937503824906206",
                "13984518089606488535832666361342246754",
                "95874020403624481419452309182796051284",
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                "229647271055391049025624426906632971028",
                "170005285849685505370479963395771628868"
            ]
        },
        "deprecated": false,
        "signature_type": "Line",
        "id": "CVE-2021-29463-f849007d"
    }
]