An issue was discovered in the DBI module before 1.643 for Perl. The hv_fetch() documentation requires checking for NULL and the code does that. But, shortly thereafter, it calls SvOK(profile), causing a NULL pointer dereference.
Weakness
The product dereferences a pointer that it expects to be valid but is NULL.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Dbi | Perl | * | 1.643 (excluding) |
| Libdbi-perl | Ubuntu | bionic | * |
| Libdbi-perl | Ubuntu | esm-infra-legacy/trusty | * |
| Libdbi-perl | Ubuntu | esm-infra/bionic | * |
| Libdbi-perl | Ubuntu | esm-infra/xenial | * |
| Libdbi-perl | Ubuntu | trusty | * |
| Libdbi-perl | Ubuntu | trusty/esm | * |
| Libdbi-perl | Ubuntu | upstream | * |
| Libdbi-perl | Ubuntu | xenial | * |
Potential Mitigations
References
- http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00012.html
- http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00013.html
- https://github.com/perl5-dbi/dbi/commit/eca7d7c8f43d96f6277e86d1000e842eb4cc67ff
- https://lists.debian.org/debian-lts-announce/2020/09/msg00026.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JXLKODJ7B57GITDEZZXNSHPK4VBYXYHR/
- https://metacpan.org/pod/distribution/DBI/Changes#Changes-in-DBI-1.643-…
- https://usn.ubuntu.com/4534-1/
- http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00012.html
- http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00013.html
- https://github.com/perl5-dbi/dbi/commit/eca7d7c8f43d96f6277e86d1000e842eb4cc67ff
- https://lists.debian.org/debian-lts-announce/2020/09/msg00026.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JXLKODJ7B57GITDEZZXNSHPK4VBYXYHR/
- https://metacpan.org/pod/distribution/DBI/Changes#Changes-in-DBI-1.643-…
- https://usn.ubuntu.com/4534-1/