Red Hat Enterprise Linux 8.1 Extended Update Support update for thunderbird
| Risk | High |
| Patch available | YES |
| Number of vulnerabilities | 2 |
| CVE-ID | CVE-2020-15664 CVE-2020-15669 |
| CWE-ID | CWE-399 CWE-416 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
Red Hat Enterprise Linux for Power, little endian - Extended Update Support Operating systems & Components / Operating system Red Hat Enterprise Linux for x86_64 - Extended Update Support Operating systems & Components / Operating system thunderbird (Red Hat package) Operating systems & Components / Operating system package or component |
| Vendor | Red Hat Inc. |
Security Bulletin
This security bulletin contains information about 2 vulnerabilities.
1) Resource management error
EUVDB-ID: #VU46016
Risk: Medium
CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2020-15664
CWE-ID:
CWE-399 - Resource Management Errors
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to bypass certain security restrictions.
The vulnerability exists due to the way Firefox handles prompts. By holding a reference to the eval() function from an
about:blank window, a malicious webpage could have gained access to the
InstallTrigger object which would allow them to prompt the user to
install an extension. Combined with user confusion, this could result in
an unintended or malicious extension being installed.
Install updates from vendor's website.
Red Hat Enterprise Linux for Power, little endian - Extended Update Support: 8.1
Red Hat Enterprise Linux for x86_64 - Extended Update Support: 8.1
thunderbird (Red Hat package): before 68.12.0-1.el8_1
CPE2.3- cpe:2.3:o:red_hat:red_hat_enterprise_linux_for_power_little_endian_-_extended_update_support:8.1:*:*:*:*:red_hat_enterprise_linux:*:
- cpe:2.3:o:red_hat:red_hat_enterprise_linux_for_x86_64_-_extended_update_support:8.1:*:*:*:*:red_hat_enterprise_linux:*:
http://access.redhat.com/errata/RHSA-2020:3632
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) Use-after-free
EUVDB-ID: #VU46018
Risk: High
CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2020-15669
CWE-ID:
CWE-416 - Use After Free
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to a use-after-free error when aborting operations in browser. A remote attacker can create a specially crafted web page, trick the victim into visiting it, trigger a use-after-free error and execute arbitrary code on the system.
Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.
MitigationInstall updates from vendor's website.
Red Hat Enterprise Linux for Power, little endian - Extended Update Support: 8.1
Red Hat Enterprise Linux for x86_64 - Extended Update Support: 8.1
thunderbird (Red Hat package): before 68.12.0-1.el8_1
CPE2.3- cpe:2.3:o:red_hat:red_hat_enterprise_linux_for_power_little_endian_-_extended_update_support:8.1:*:*:*:*:red_hat_enterprise_linux:*:
- cpe:2.3:o:red_hat:red_hat_enterprise_linux_for_x86_64_-_extended_update_support:8.1:*:*:*:*:red_hat_enterprise_linux:*:
http://access.redhat.com/errata/RHSA-2020:3632
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.
