CVE-2023-0616: mozilla thunderbird Uncontrolled Resource Consumption
Vulnerability summary
CVE-2023-0616 is a medium (CVSS 6.5) Uncontrolled Resource Consumption vulnerability in mozilla thunderbird. EPSS estimates a 0.49% chance of exploitation in the next 30 days, higher than 40.7% of scored vulnerabilities.
Advisory lineage
Upstream 0 · Downstream 14 · Related 3Timeline
- 02-06-2023PublishedVulnerability first disclosed.
- 10-01-2025Last modifiedVulnerability information updated.
Description
If a MIME email combines OpenPGP and OpenPGP MIME data in a certain way Thunderbird repeatedly attempts to process and display the message, which could cause Thunderbird's user interface to lock up and no longer respond to the user's actions. An attacker could send a crafted message with this structure to attempt a DoS attack. This vulnerability affects Thunderbird < 102.8.
CVSS metrics
4 scores · 4 sources · 1 version- OSV · UbuntuEcosystem advisory · calculated6.5MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated6.5MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- NVDNIST6.5MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
EPSS trend
Probability
0.49%
Chance of exploitation in the next 30 days
Percentile
41%
Versus all other CVEs
30-day change
0.00 pp
From 0.49% on 18-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-400Uncontrolled Resource ConsumptionThe product does not properly control the allocation and maintenance of a limited resource.
- CWE-770Allocation of Resources Without Limits or ThrottlingThe product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated.
Affected systems
Debian1 product
- thunderbird< 1:102.8.0-1
Mozilla1 product
- thunderbird≥ unspecified, < 102.8 | < 102.8
Ubuntu1 product
- thunderbird< 1:102.8.0+build2-0ubuntu0.18.04.1 | < 1:102.8.0+build2-0ubuntu0.20.04.1 | < 1:102.8.0+build2-0ubuntu0.22.04.1
3 vendors · 3 products
References
7 links- www.mozilla.org/security/advisories/mfsa2023-07/Vendor Advisory
