The git_oid_nfmt function in commit.c in libgit2 before 0.24.3 allows remote attackers to cause a denial of service (NULL pointer dereference) via a cat-file command with a crafted object file.
A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Libgit2 | Libgit2_project | * | 0.24.2 (including) |
| Libgit2 | Ubuntu | artful | * |
| Libgit2 | Ubuntu | esm-apps/xenial | * |
| Libgit2 | Ubuntu | trusty | * |
| Libgit2 | Ubuntu | trusty/esm | * |
| Libgit2 | Ubuntu | upstream | * |
| Libgit2 | Ubuntu | xenial | * |
| Libgit2 | Ubuntu | yakkety | * |
| Libgit2 | Ubuntu | zesty | * |