Multiple vulnerabilities in Mozilla Thunderbird
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 2 |
| CVE-ID | CVE-2021-29957 CVE-2021-29956 |
| CWE-ID | CWE-693 CWE-312 |
| 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 2 vulnerabilities.
1) Protection Mechanism Failure
EUVDB-ID: #VU53307
Risk: Low
CVSSv3.1:
CVE-ID: CVE-2021-29957
CWE-ID:
Exploit availability:
DescriptionThe vulnerability allows a remote attacker to bypass implemented security restrictions.
The vulnerability exists due to insufficient implementation of security measures. If a MIME encoded email contains an OpenPGP inline signed or encrypted message part, but also contains an additional unprotected part, Thunderbird did not indicate that only parts of the message are protected.
MitigationInstall updates from vendor's website.
Vulnerable software versionsMozilla Thunderbird: 78.0 - 78.10.1
Fixed software versionsCPE2.3 External links
http://www.mozilla.org/en-US/security/advisories/mfsa2021-22/
Q & A
Can this vulnerability be exploited remotely?
Is there known malware, which exploits this vulnerability?
2) Cleartext storage of sensitive information
EUVDB-ID: #VU53308
Risk: Low
CVSSv3.1:
CVE-ID: CVE-2021-29956
CWE-ID:
Exploit availability:
DescriptionThe vulnerability allows a local user to gain access to sensitive information.
The vulnerability exists due to OpenPGP secret keys that were imported using Thunderbird. were stored unencrypted on the user's local disk. The master password protection was inactive for those keys. A local user can gain access to sensitive information.
Install updates from vendor's website.
Vulnerable software versionsMozilla Thunderbird: 78.8.1 - 78.10.1
Fixed software versionsCPE2.3 External links
http://www.mozilla.org/en-US/security/advisories/mfsa2021-22/
Q & A
Can this vulnerability be exploited remotely?
Is there known malware, which exploits this vulnerability?
