Vulnerability · Published Dec 14, 2020 · Assigned by hackerone
CVE-2020-8231
High 7.5
In plain English
A high-severity use-after-free in https://github.com/curl/curl. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 5.3% (higher than 93% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)7.5High
Exploit odds (30 days)5.3%top 7.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Due to use of a dangling pointer, libcurl 7.29.0 through 7.71.1 can use the wrong connection when sending data.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.20 | curl | 7.72.0-r0 | ALPINE-CVE-2020-8231 |
| Alpine:v3.21 | curl | 7.72.0-r0 | ALPINE-CVE-2020-8231 |
| Alpine:v3.22 | curl | 7.72.0-r0 | ALPINE-CVE-2020-8231 |
| Alpine:v3.23 | curl | 7.72.0-r0 | ALPINE-CVE-2020-8231 |
| Alpine:v3.24 | curl | 7.72.0-r0 | ALPINE-CVE-2020-8231 |
| Debian:12 | curl | 7.72.0-1 | DEBIAN-CVE-2020-8231 |
| Debian:13 | curl | 7.72.0-1 | DEBIAN-CVE-2020-8231 |
| Debian:14 | curl | 7.72.0-1 | DEBIAN-CVE-2020-8231 |
| Rocky Linux:8 | curl | 0:7.61.1-18.el8 | RLSA-2021:1610 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| n/a | https://github.com/curl/curl | libcurl 7.29.0 to and including 7.71.1 |
Weakness: CWE-416
References
- https://hackerone.com/reports/948876 x_refsource_MISC
- https://curl.haxx.se/docs/CVE-2020-8231.html x_refsource_MISC
- GLSA-202012-14 vendor-advisory, x_refsource_GENTOO
- DSA-4881 vendor-advisory, x_refsource_DEBIAN
- [bookkeeper-issues] 20210628 [GitHub] [bookkeeper] padma81 opened a new issue #2746: Security Vulnerabilities in CentOS 7 image, Upgrade image to CentOS 8 mailing-list, x_refsource_MLIST
- [bookkeeper-issues] 20210629 [GitHub] [bookkeeper] padma81 opened a new issue #2746: Security Vulnerabilities in CentOS 7 image, Upgrade image to CentOS 8 mailing-list, x_refsource_MLIST
- https://www.oracle.com/security-alerts/cpuapr2022.html x_refsource_MISC
- https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf x_refsource_CONFIRM
- https://cert-portal.siemens.com/productcert/html/ssa-389290.html
- https://cert-portal.siemens.com/productcert/html/ssa-398330.html