VDB
CVE-2021-3420
CVE-2021-3420
PUBLISHED
CVSS 9.800000190734863 CRITICAL
A flaw was found in newlib in versions prior to 4.0.0. Improper overflow validation in the memory allocation functions mEMALIGn, pvALLOc, nano_memalign, nano_valloc, nano_pvalloc could case an integer overflow, leading to an allocation of a small buffer and then to a heap-based buffer overflow.
EPSS 2.10% · 81.0th percentile
Risk Scores
CVSS 3.1
9.800000190734863
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS Score
2.10%
81.0th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Ubuntu:24.04:LTS | newlib | 0, 3.3.0-1.3, 4.4.0.20231231-2 |
| Ubuntu:22.04:LTS | newlib | 3.3.0-1, 3.3.0-1.2, 3.3.0-1.3 |
| Ubuntu:20.04:LTS | newlib | 0, 3.1.0.20181231-1, 3.3.0-0ubuntu1 |
| Ubuntu:16.04:LTS | newlib | 0, 2.1.0+git20141201.db59ff3-2, 2.2.0+git20150830.5a3d536-1 |
| Ubuntu:18.04:LTS | newlib | 0, 2.4.0.20160527-2, 2.4.0.20160527-3 |
Timeline
- Mar 5, 2021 CVE Published
- Apr 14, 2021 EPSS Score
- Jun 23, 2021 EPSS Score
- Aug 25, 2021 EPSS Score
- Dec 29, 2021 EPSS Score
- Jan 6, 2022 EPSS Score
- Feb 4, 2022 EPSS Score
- Mar 2, 2022 EPSS Score
- Apr 1, 2022 EPSS Score
- May 4, 2022 EPSS Score
- Sep 8, 2022 EPSS Score
- Nov 10, 2022 EPSS Score
References
- https://ubuntu.com/security/CVE-2021-3420 third-party-advisory
- https://sourceware.org/git/?p=newlib-cygwin.git;a=commit;h=aa106b29a6a8a1b0df9e334704292cbc32f2d44e third-party-advisory
- https://www.cve.org/CVERecord?id=CVE-2021-3420 third-party-advisory