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 firefox to version 73.0-1.

Vulnerable software versions

Arch Linux:

CPE
External links

https://security.archlinux.org/advisory/ASA-202002-5

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) 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 firefox to version 73.0-1.

Vulnerable software versions

Arch Linux:

CPE
External links

https://security.archlinux.org/advisory/ASA-202002-5

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) Memory corruption

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-2020-6800

CWE-ID:
CWE-119 – Improper Restriction of Operations within the Bounds of a Memory Buffer

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 HTML content. 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 firefox to version 73.0-1.

Vulnerable software versions

Arch Linux:

CPE
External links

https://security.archlinux.org/advisory/ASA-202002-5

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

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-2020-6801

CWE-ID:
CWE-119 – Improper Restriction of Operations within the Bounds of a Memory Buffer

Description

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

The vulnerability exists due to a boundary error when HTML content. 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 firefox to version 73.0-1.

Vulnerable software versions

Arch Linux:

CPE
External links

https://security.archlinux.org/advisory/ASA-202002-5

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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