Vulnerability · Published Aug 22, 2023 · Assigned by mitre
CVE-2020-19909
Low 3.3
In plain English
A low-severity security flaw in the curl package (Debian). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 31% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
Integer overflow vulnerability in tool_operate.c in curl 7.65.2 via a large value as the retry delay. NOTE: many parties report that this has no direct security impact on the curl user; however, it may (in theory) cause a denial of service to associated systems or networks if, for example, --retry-delay is misinterpreted as a value much smaller than what was intended. This is not especially plausible because the overflow only happens if the user was trying to specify that curl should wait weeks (or longer) before trying to recover from a transient error.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | curl | 7.66.0-1 | DEBIAN-CVE-2020-19909 |
| Debian:13 | curl | 7.66.0-1 | DEBIAN-CVE-2020-19909 |
| Debian:14 | curl | 7.66.0-1 | DEBIAN-CVE-2020-19909 |
Affected products (as reported)
References
- https://github.com/curl/curl/pull/4166
- https://daniel.haxx.se/blog/2023/08/26/cve-2020-19909-is-everything-that-is-wrong-with-cves/
- http://www.openwall.com/lists/oss-security/2026/07/23/2
- http://www.openwall.com/lists/oss-security/2026/07/25/5
- https://cert-portal.siemens.com/productcert/html/ssa-398330.html