VulnerabilityModified
CVE-2021-42203
A heap-use-after-free exists in the function swf_FontExtract_DefineTextCallback() located in swftext.c.
HIGH 7.8EPSS 1.17%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.17%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
An issue was discovered in swftools through 20201222. A heap-use-after-free exists in the function swf_FontExtract_DefineTextCallback() located in swftext.c. It allows an attacker to cause code execution.
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- EPSS
- 1.17% probability · 66th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-416
- Affected
- swftools/swftools
- Source
- cve@mitre.org
References
- https://github.com/matthiaskramm/swftools/issues/176Exploit, Third Party Advisory
- https://github.com/matthiaskramm/swftools/issues/176Exploit, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.