Multiple vulnerabilities in Exiv2



| Updated: 2020-06-30
Risk Medium
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2019-17402
CVE-2019-20421
CWE-ID CWE-119
CWE-835
Exploitation vector Network
Public exploit N/A
Vulnerable software
 Exiv2
Universal components / Libraries / Libraries used by multiple products

Vendor GNU

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

Updated: 30.06.2020

Added fixed version, updated bulletin status to patched.

1) Buffer overflow

EUVDB-ID: #VU28797

Risk: Medium

CVSSv4.0: 4.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2019-17402

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary in Exiv2::getULong() function in types.cpp when called from Exiv2::Internal::CiffDirectory::readDirectory in crwimage_int.cpp. A remote attacker can pass specially crafted data to the application, trigger memory corruption and crash the service.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Exiv2: 0.16 - 0.27.2

CPE2.3 External links

https://github.com/Exiv2/exiv2/issues/1019
https://lists.debian.org/debian-lts-announce/2019/12/msg00001.html
https://usn.ubuntu.com/4159-1/


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Infinite loop

EUVDB-ID: #VU28798

Risk: Medium

CVSSv4.0: 4.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2019-20421

CWE-ID: CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to infinite loop within the Jp2Image::readMetadata() in jp2image.cpp. A remote attacker can create a specially crafted image file, pass it to the affected application and consume all available system resources or cause denial of service conditions.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Exiv2: 0.16 - 0.27.2

CPE2.3 External links

https://github.com/Exiv2/exiv2/commit/a82098f4f90cd86297131b5663c3dec6a34470e8
https://github.com/Exiv2/exiv2/issues/1011
https://usn.ubuntu.com/4270-1/


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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