Vulnerability · Published Nov 24, 2020 · Assigned by mitre
CVE-2020-28928
Medium 5.5
In plain English
A medium-severity security flaw in the musl package (Alpine). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 51% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)5.5Medium
Exploit odds (30 days)0.7%top 48.6% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
In musl libc through 1.2.1, wcsnrtombs mishandles particular combinations of destination buffer size and source character limit, as demonstrated by an invalid write access (buffer overflow).
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.20 | musl | 1.2.2_pre2-r0 | ALPINE-CVE-2020-28928 |
| Alpine:v3.21 | musl | 1.2.2_pre2-r0 | ALPINE-CVE-2020-28928 |
| Alpine:v3.22 | musl | 1.2.2_pre2-r0 | ALPINE-CVE-2020-28928 |
| Alpine:v3.23 | musl | 1.2.2_pre2-r0 | ALPINE-CVE-2020-28928 |
| Alpine:v3.24 | musl | 1.2.2_pre2-r0 | ALPINE-CVE-2020-28928 |
| Debian:12 | musl | 1.2.2-1 | DEBIAN-CVE-2020-28928 |
| Debian:13 | musl | 1.2.2-1 | DEBIAN-CVE-2020-28928 |
| Debian:14 | musl | 1.2.2-1 | DEBIAN-CVE-2020-28928 |
Affected products (as reported)
References
- https://musl.libc.org/releases.html x_refsource_MISC
- [debian-lts-announce] 20201130 [SECURITY] [DLA 2474-1] musl security update mailing-list, x_refsource_MLIST
- [apisix-notifications] 20210428 [GitHub] [apisix-docker] tao12345666333 opened a new pull request #166: fix: upgrade alpine version due to CVE-2020-28928 mailing-list, x_refsource_MLIST
- [apisix-notifications] 20210428 [apisix-docker] branch master updated: fix: upgrade alpine version due to CVE-2020-28928 (#166) mailing-list, x_refsource_MLIST
- [apisix-notifications] 20210428 [GitHub] [apisix-docker] starsz merged pull request #166: fix: upgrade alpine version due to CVE-2020-28928 mailing-list, x_refsource_MLIST
- FEDORA-2021-4892dbbf76 vendor-advisory, x_refsource_FEDORA
- FEDORA-2021-0cf36f9134 vendor-advisory, x_refsource_FEDORA
- https://www.oracle.com//security-alerts/cpujul2021.html x_refsource_MISC
- http://www.openwall.com/lists/oss-security/2020/11/20/4 x_refsource_CONFIRM
- https://www.oracle.com/security-alerts/cpuoct2021.html x_refsource_MISC