Ubuntu update for imagemagick



Risk High
Patch available YES
Number of vulnerabilities 5
CVE-ID CVE-2021-20244
CVE-2021-20246
CVE-2021-20309
CVE-2021-20312
CVE-2021-20313
CWE-ID CWE-369
CWE-190
CWE-200
Exploitation vector Network
Public exploit N/A
Vulnerable software
 Ubuntu
Operating systems & Components / Operating system

libmagick++-6.q16-5v5 (Ubuntu package)
Operating systems & Components / Operating system package or component

libmagick++-6.q16-7 (Ubuntu package)
Operating systems & Components / Operating system package or component

libmagick++5 (Ubuntu package)
Operating systems & Components / Operating system package or component

Vendor Canonical Ltd.

Security Bulletin

This security bulletin contains information about 5 vulnerabilities.

1) Division by zero

EUVDB-ID: #VU62872

Risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2021-20244

CWE-ID: CWE-369 - Divide By Zero

Exploit availability: No

Description

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

The vulnerability exists due to a division by zero error in MagickCore/visual-effects.c . A remote attacker can pass specially crafted data to the application and crash it.

Mitigation

Update the affected package imagemagick to the latest version.

Vulnerable software versions

Ubuntu: 14.04 - 18.04

libmagick++-6.q16-5v5 (Ubuntu package): before 8:6.8.9.97ubuntu5.16+esm2

libmagick++-6.q16-7 (Ubuntu package): before 8:6.9.7.4+dfsg-16ubuntu6.12

libmagick++5 (Ubuntu package): before 6.7.7.10-6ubuntu3

CPE2.3 External links

https://ubuntu.com/security/notices/USN-5158-1


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) Division by zero

EUVDB-ID: #VU62890

Risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2021-20246

CWE-ID: CWE-369 - Divide By Zero

Exploit availability: No

Description

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

The vulnerability exists due to a division by zero error in MagickCore/resample.c. A remote attacker can pass a specially crafted data to the application and crash it.

Mitigation

Update the affected package imagemagick to the latest version.

Vulnerable software versions

Ubuntu: 14.04 - 18.04

libmagick++-6.q16-5v5 (Ubuntu package): before 8:6.8.9.97ubuntu5.16+esm2

libmagick++-6.q16-7 (Ubuntu package): before 8:6.9.7.4+dfsg-16ubuntu6.12

libmagick++5 (Ubuntu package): before 6.7.7.10-6ubuntu3

CPE2.3 External links

https://ubuntu.com/security/notices/USN-5158-1


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) Division by zero

EUVDB-ID: #VU62868

Risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2021-20309

CWE-ID: CWE-369 - Divide By Zero

Exploit availability: No

Description

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

The vulnerability exists due to a division by zero error in the WaveImage() function in MagickCore/visual-effects.c . A remote attacker can pass specially crafted image file to the application and crash it.

Mitigation

Update the affected package imagemagick to the latest version.

Vulnerable software versions

Ubuntu: 14.04 - 18.04

libmagick++-6.q16-5v5 (Ubuntu package): before 8:6.8.9.97ubuntu5.16+esm2

libmagick++-6.q16-7 (Ubuntu package): before 8:6.9.7.4+dfsg-16ubuntu6.12

libmagick++5 (Ubuntu package): before 6.7.7.10-6ubuntu3

CPE2.3 External links

https://ubuntu.com/security/notices/USN-5158-1


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) Integer overflow

EUVDB-ID: #VU62867

Risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2021-20312

CWE-ID: CWE-190 - Integer overflow

Exploit availability: No

Description

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

The vulnerability exists due to integer overflow in the WriteTHUMBNAILImage() function in coders/thumbnail.c. A remote attacker can pass specially crafted data to the application, trigger integer overflow 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 imagemagick to the latest version.

Vulnerable software versions

Ubuntu: 14.04 - 18.04

libmagick++-6.q16-5v5 (Ubuntu package): before 8:6.8.9.97ubuntu5.16+esm2

libmagick++-6.q16-7 (Ubuntu package): before 8:6.9.7.4+dfsg-16ubuntu6.12

libmagick++5 (Ubuntu package): before 6.7.7.10-6ubuntu3

CPE2.3 External links

https://ubuntu.com/security/notices/USN-5158-1


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.

5) Information disclosure

EUVDB-ID: #VU62861

Risk: Medium

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

CVE-ID: CVE-2021-20313

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to potential cipher leak when calculating signatures in TransformSignature() function in MagickCore/signature.c. A remote attacker can gain unauthorized access to sensitive information on the system.

Mitigation

Update the affected package imagemagick to the latest version.

Vulnerable software versions

Ubuntu: 14.04 - 18.04

libmagick++-6.q16-5v5 (Ubuntu package): before 8:6.8.9.97ubuntu5.16+esm2

libmagick++-6.q16-7 (Ubuntu package): before 8:6.9.7.4+dfsg-16ubuntu6.12

libmagick++5 (Ubuntu package): before 6.7.7.10-6ubuntu3

CPE2.3 External links

https://ubuntu.com/security/notices/USN-5158-1


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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