Severity High
Patch available YES
Number of vulnerabilities 5
CVE ID CVE-2020-6796
CVE-2020-6797
CVE-2020-6798
CVE-2020-6799
CVE-2020-6800
CWE ID CWE-787
CWE-284
CWE-94
CWE-78
CWE-119
Exploitation vector Network
Public exploit N/A
Vulnerable software
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Slackware Linux

Operating systems & Components /
Operating system
Vendor Slackware

Security Advisory

1) Out-of-bounds write

Severity: High

CVSSv3:
7.7 [CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C] [PCI]

CVE-ID:
CVE-2020-6796

CWE-ID:
CWE-787 – Out-of-bounds Write

Description

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

The vulnerability exists due to a boundary error when reading shared memory in the parent process. A remote attacker can create a specially crafted website, 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 mozilla-firefox.

Vulnerable software versions

Slackware Linux:
14.2

CPE
External links

http://www.slackware.com/security/viewer.php?l=slackware-security&y=2020&m=slackware-security.385191

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) Improper access control

Severity: Medium

CVSSv3:
5.9 [CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C] [PCI]

CVE-ID:
CVE-2020-6797

CWE-ID:
CWE-284 – Improper Access Control

Description


The vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.


The vulnerability exists due to improper access restrictions imposed on extensions that are granted downloads.open permission. A remote attacker can bypass implemented security restrictions and launch or open arbitrary application on the system.

Note: the vulnerability affects Mac OSX users only.

Mitigation

Update the affected package mozilla-firefox.

Vulnerable software versions

Slackware Linux:
14.2

CPE
External links

http://www.slackware.com/security/viewer.php?l=slackware-security&y=2020&m=slackware-security.385191

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) Code Injection

Severity: Medium

CVSSv3:
4.7 [CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C] [PCI]

CVE-ID:
CVE-2020-6798

CWE-ID:
CWE-94 – Improper Control of Generation of Code (‘Code Injection’)

Description


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


The vulnerability exists due to improper input validation when parsing template tag. A remote attacker can confuse the JavaScript parser into executing an arbitrary JavaScript send a specially crafted request 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 mozilla-firefox.

Vulnerable software versions

Slackware Linux:
14.2

CPE
External links

http://www.slackware.com/security/viewer.php?l=slackware-security&y=2020&m=slackware-security.385191

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) OS Command Injection

Severity: Medium

CVSSv3:
6.5 [CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C] [PCI]

CVE-ID:
CVE-2020-6799

CWE-ID:
CWE-78 – Improper Neutralization of Special Elements used in an OS Command (‘OS Command Injection’)

Description


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


The vulnerability exists due to improper input validation when opening PDF links from other applications and Firefox is configured as a default PDF reader. A remote unauthenticated attacker can trick the victim into clicking on a specially crafted link and execute arbitrary OS commands on the system.


Note: This issue only affects Windows operating systems and when Firefox is configured as the default handler for non-default filetypes. Other operating systems are unaffected.

Mitigation

Update the affected package mozilla-firefox.

Vulnerable software versions

Slackware Linux:
14.2

CPE
External links

http://www.slackware.com/security/viewer.php?l=slackware-security&y=2020&m=slackware-security.385191

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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