Multiple vulnerabilities in Mozilla Thunderbird
| Risk | High |
| Patch available | YES |
| Number of vulnerabilities | 5 |
| CVE-ID | CVE-2020-12417 CVE-2020-12418 CVE-2020-12419 CVE-2020-12420 CVE-2020-12421 |
| CWE-ID | CWE-20 CWE-125 CWE-416 CWE-295 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
Mozilla Thunderbird Client/Desktop applications / Messaging software |
| Vendor | Mozilla |
Security Bulletin
This security bulletin contains information about 5 vulnerabilities.
1) Input validation error
EUVDB-ID: #VU29452
Risk: Medium
CVSSv3.1:
CVE-ID: CVE-2020-12417
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: No
Description
The vulnerability allows a remote attacker to perform cache poisoning attack.
The vulnerability exists due to an error when processing the %2F character in a manifest URL, which results in Firefox's AppCache behavior to become confused and allowe a manifest to be served from a subdirectory. This could cause the appcache to be used to service requests for the top level directory.
Mitigation
Install update from vendor's website.
Mozilla Thunderbird: 60.0 - 68.9.0
CPE2.3 External linkshttp://www.mozilla.org/en-US/security/advisories/mfsa2020-26/
Q & A
Can this vulnerability be exploited remotely?
Is there known malware, which exploits this vulnerability?
2) Out-of-bounds read
EUVDB-ID: #VU29453
Risk: Medium
CVSSv3.1:
CVE-ID: CVE-2020-12418
CWE-ID:
CWE-125 - Out-of-bounds read
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to a boundary condition while processing individual parts of a URL object. A remote attacker can create a specially crafted web page, trick the victim into opening it, trigger out-of-bounds read error and read contents of memory on the system.
MitigationInstall update from vendor's website.
Mozilla Thunderbird: 60.0 - 68.9.0
CPE2.3 External linkshttp://www.mozilla.org/en-US/security/advisories/mfsa2020-26/
Q & A
Can this vulnerability be exploited remotely?
Is there known malware, which exploits this vulnerability?
3) Use-after-free
EUVDB-ID: #VU29455
Risk: High
CVSSv3.1:
CVE-ID: CVE-2020-12419
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 processing callbacks that occurred during window flushing in the parent process in nsGlobalWindowInner. 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 target system.
Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.
MitigationInstall update from vendor's website.
Mozilla Thunderbird: 60.0 - 68.9.0
CPE2.3 External linkshttp://www.mozilla.org/en-US/security/advisories/mfsa2020-26/
Q & A
Can this vulnerability be exploited remotely?
Is there known malware, which exploits this vulnerability?
4) Use-after-free
EUVDB-ID: #VU29456
Risk: High
CVSSv3.1:
CVE-ID: CVE-2020-12420
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 trying to connect to a STUN server. A remote attacker can create a specially crafted web page, trick the victim into visiting it, trigger a race condition that causes the use-after-free of a pointer and execute arbitrary code on the system.
Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.
MitigationInstall update from vendor's website.
Mozilla Thunderbird: 60.0 - 68.9.0
CPE2.3 External linkshttp://www.mozilla.org/en-US/security/advisories/mfsa2020-26/
Q & A
Can this vulnerability be exploited remotely?
Is there known malware, which exploits this vulnerability?
5) Improper Certificate Validation
EUVDB-ID: #VU29457
Risk: Low
CVSSv3.1:
CVE-ID: CVE-2020-12421
CWE-ID:
CWE-295 - Improper Certificate Validation
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to disable installed Add-Ons.
The vulnerability exists due to Add-On updates do not respect the same certificate trust rules as software updates. When performing add-on updates, certificate chains terminating in non-built-in-roots were rejected (even if they were legitimately added by an administrator.) This could have caused add-ons to become out-of-date silently without notification to the user.
MitigationInstall update from vendor's website.
Mozilla Thunderbird: 60.0 - 68.9.0
CPE2.3 External linkshttp://www.mozilla.org/en-US/security/advisories/mfsa2020-26/
Q & A
Can this vulnerability be exploited remotely?
Is there known malware, which exploits this vulnerability?
