Vulnerability Name:

CVE-2021-37615 (CCN-207133)

Assigned:2021-08-07
Published:2021-08-07
Updated:2021-09-21
Summary: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.
CVSS v3 Severity:5.5 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H)
4.8 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): Required
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
5.5 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H)
4.8 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): Required
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
CVSS v2 Severity:4.3 Medium (CVSS v2 Vector: AV:N/AC:M/Au:N/C:N/I:N/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Medium
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial
4.6 Medium (CCN CVSS v2 Vector: AV:L/AC:L/Au:S/C:N/I:N/A:C)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Complete
Vulnerability Type:CWE-476
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2021-37615

Source: XF
Type: UNKNOWN
exiv2-cve202137615-dos(207133)

Source: MISC
Type: Patch, Third Party Advisory
https://github.com/Exiv2/exiv2/pull/1758

Source: CCN
Type: Exiv2 GIT Repository
Null pointer dereference in Exiv2::Internal::resolveLens0x319

Source: CONFIRM
Type: Third Party Advisory
https://github.com/Exiv2/exiv2/security/advisories/GHSA-h9x9-4f77-336w

Source: FEDORA
Type: Mailing List, Third Party Advisory
FEDORA-2021-399f869889

Source: FEDORA
Type: Mailing List, Third Party Advisory
FEDORA-2021-cbaef8e2d5

Vulnerable Configuration:Configuration 1:
  • cpe:/a:exiv2:exiv2:*:*:*:*:*:*:*:* (Version <= 0.27.4)

    • Configuration 2:
  • cpe:/o:fedoraproject:fedora:33:*:*:*:*:*:*:*
  • OR cpe:/o:fedoraproject:fedora:34:*:*:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/a:exiv2:exiv2:0.27.1:*:*:*:*:*:*:*
  • OR cpe:/a:exiv2:exiv2:0.27.2:*:*:*:*:*:*:*
  • OR cpe:/a:exiv2:exiv2:0.27.4:rc1:*:*:*:*:*:*
  • OR cpe:/a:exiv2:exiv2:0.27.3:-:*:*:*:*:*:*
  • OR cpe:/a:exiv2:exiv2:0.27.4:rc1:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    exiv2 exiv2 *
    fedoraproject fedora 33
    fedoraproject fedora 34
    exiv2 exiv2 0.27.1
    exiv2 exiv2 0.27.2
    exiv2 exiv2 0.27.4 rc1
    exiv2 exiv2 0.27.3 -
    exiv2 exiv2 0.27.4 rc1