pypdf is a free and open-source pure-python PDF library. An attacker who uses a vulnerability present in versions prior to 6.10.1 can craft a PDF which leads to long runtimes. This requires cross-reference streams with wrong large /Size values or object streams with wrong large /N values. This has been fixed in pypdf 6.10.1. As a workaround, one may apply the changes from the patch manually.
Weakness
The product performs an iteration or loop without sufficiently limiting the number of times that the loop is executed.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Pypdf | Pypdf_project | * | 6.10.1 (excluding) |
| Pypdf2 | Ubuntu | esm-apps/xenial | * |