Vulnerability · Published Mar 2, 2020 · Assigned by mozilla
CVE-2020-6795
Medium 6.5
In plain English
A medium-severity security flaw in Thunderbird from Mozilla. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.3% (higher than 71% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)6.5Medium
Exploit odds (30 days)1.3%top 29.4% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
When processing a message that contains multiple S/MIME signatures, a bug in the MIME processing code caused a null pointer dereference, leading to an unexploitable crash. This vulnerability affects Thunderbird < 68.5.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.20 | thunderbird | 68.5.0-r0 | ALPINE-CVE-2020-6795 |
| Alpine:v3.21 | thunderbird | 68.5.0-r0 | ALPINE-CVE-2020-6795 |
| Alpine:v3.22 | thunderbird | 68.5.0-r0 | ALPINE-CVE-2020-6795 |
| Alpine:v3.23 | thunderbird | 68.5.0-r0 | ALPINE-CVE-2020-6795 |
| Debian:12 | thunderbird | 1:68.5.0-1 | DEBIAN-CVE-2020-6795 |
| Debian:13 | thunderbird | 1:68.5.0-1 | DEBIAN-CVE-2020-6795 |
| Debian:14 | thunderbird | 1:68.5.0-1 | DEBIAN-CVE-2020-6795 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Thunderbird | unspecified – before 68.5 |
References
- https://www.mozilla.org/security/advisories/mfsa2020-07/ x_refsource_MISC
- https://bugzilla.mozilla.org/show_bug.cgi?id=1611105 x_refsource_MISC
- GLSA-202003-10 vendor-advisory, x_refsource_GENTOO
- USN-4328-1 vendor-advisory, x_refsource_UBUNTU
- USN-4335-1 vendor-advisory, x_refsource_UBUNTU