// For flags

CVE-2019-17402

exiv2: out-of-bounds read in CiffDirectory::readDirectory due to lack of size check

Severity Score

6.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

Exiv2 0.27.2 allows attackers to trigger a crash in Exiv2::getULong in types.cpp when called from Exiv2::Internal::CiffDirectory::readDirectory in crwimage_int.cpp, because there is no validation of the relationship of the total size to the offset and size.

Exiv2 versión 0.27.2, permite a atacantes activar un bloqueo en la función Exiv2::getULong en el archivo types.cpp cuando es llamada desde la función Exiv2::Internal::CiffDirectory::readDirectory en el archivo crwimage_int.cpp, porque no existe comprobación de la relación del tamaño total con el desplazamiento y el tamaño.

An out of bounds read vulnerability was discovered in the way exiv2 parses Canon raw format (CRW) images. An application that uses exiv2 library to parse untrusted images may be vulnerable to this flaw, which could be used by an attacker to extract data from the application's memory or make it crash. The biggest threat with this vulnerability is availability of the system.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
Low
Attack Vector
Network
Attack Complexity
Medium
Authentication
None
Confidentiality
None
Integrity
None
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2019-10-09 CVE Reserved
  • 2019-10-09 CVE Published
  • 2024-02-02 EPSS Updated
  • 2024-08-05 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
  • CWE-125: Out-of-bounds Read
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Exiv2
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Exiv2
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0.27.2
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-
Affected
Debian
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Debian Linux
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8.0
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-
Affected
Debian
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Debian Linux
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10.0
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-
Affected
Canonical
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Ubuntu Linux
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16.04
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esm
Affected
Canonical
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Ubuntu Linux
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18.04
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lts
Affected
Canonical
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Ubuntu Linux
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19.04
Search vendor "Canonical" for product "Ubuntu Linux" and version "19.04"
-
Affected
Canonical
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Ubuntu Linux
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19.10
Search vendor "Canonical" for product "Ubuntu Linux" and version "19.10"
-
Affected