Ubuntu update for exiv2



Risk High
Patch available YES
Number of vulnerabilities 4
CVE-ID CVE-2021-29457
CVE-2021-29458
CVE-2021-29470
CVE-2021-3482
CWE-ID CWE-125
Exploitation vector Network
Public exploit N/A
Vulnerable software
 Ubuntu
Operating systems & Components / Operating system

libexiv2-27 (Ubuntu package)
Operating systems & Components / Operating system package or component

libexiv2-14 (Ubuntu package)
Operating systems & Components / Operating system package or component

Vendor Canonical Ltd.

Security Bulletin

This security bulletin contains information about 4 vulnerabilities.

1) Heap-based buffer overflow

EUVDB-ID: #VU55920

Risk: Medium

CVSSv4.0: 4.8 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2021-29457

CWE-ID: N/A

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 error. A remote attacker can trick the victim top open a specially crafted image, trigger a heap-based buffer overflow and execute arbitrary code on the target system.

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`.

Mitigation

Update the affected package exiv2 to the latest version.

Vulnerable software versions

Ubuntu: 16.04 - 21.04

libexiv2-27 (Ubuntu package): before 0.27.2-8ubuntu2.2

libexiv2-14 (Ubuntu package): before 0.25-3.1ubuntu0.18.04.7

CPE2.3 External links

https://ubuntu.com/security/notices/USN-4941-1


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) Out-of-bounds read

EUVDB-ID: #VU84709

Risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2021-29458

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

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

The vulnerability exists due to a boundary condition within the Exiv2::Internal::CrwMap::encode() function. A remote attacker can pass a specially crafted file to the application and perform a denial of service attack.

Mitigation

Update the affected package exiv2 to the latest version.

Vulnerable software versions

Ubuntu: 16.04 - 21.04

libexiv2-27 (Ubuntu package): before 0.27.2-8ubuntu2.2

libexiv2-14 (Ubuntu package): before 0.25-3.1ubuntu0.18.04.7

CPE2.3 External links

https://ubuntu.com/security/notices/USN-4941-1


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.

3) Out-of-bounds read

EUVDB-ID: #VU84712

Risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2021-29470

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

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

The vulnerability exists due to a boundary condition in Exiv2::Jp2Image::encodeJp2Header(). A remote attacker can pass specially crafted file to the application and perform a denial of service (DoS) attack.

Mitigation

Update the affected package exiv2 to the latest version.

Vulnerable software versions

Ubuntu: 16.04 - 21.04

libexiv2-27 (Ubuntu package): before 0.27.2-8ubuntu2.2

libexiv2-14 (Ubuntu package): before 0.25-3.1ubuntu0.18.04.7

CPE2.3 External links

https://ubuntu.com/security/notices/USN-4941-1


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.

4) Buffer overflow

EUVDB-ID: #VU55919

Risk: High

CVSSv4.0: 6.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2021-3482

CWE-ID: N/A

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 error when processing EXIF data in Jp2Image::readMetadata() in jp2image.cpp. A remote attacker can create a specially crafted EXIF document, trick the victim into opening it, trigger memory corruption and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Update the affected package exiv2 to the latest version.

Vulnerable software versions

Ubuntu: 16.04 - 21.04

libexiv2-27 (Ubuntu package): before 0.27.2-8ubuntu2.2

libexiv2-14 (Ubuntu package): before 0.25-3.1ubuntu0.18.04.7

CPE2.3 External links

https://ubuntu.com/security/notices/USN-4941-1


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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