Kerberos 5 (aka krb5) 1.21.2 contains a memory leak in /krb5/src/lib/rpc/pmap_rmt.c.
Weakness
The product does not sufficiently track and release allocated memory after it has been used, making the memory unavailable for reallocation and reuse.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Kerberos_5 | Mit | 1.21.2 (including) | 1.21.2 (including) |
| Red Hat Enterprise Linux 8 | RedHat | krb5-0:1.18.2-27.el8_10 | * |
| Red Hat Enterprise Linux 9 | RedHat | krb5-0:1.21.1-3.el9 | * |
| Red Hat Enterprise Linux 9 | RedHat | krb5-0:1.21.1-3.el9 | * |
| Krb5 | Ubuntu | bionic | * |
| Krb5 | Ubuntu | devel | * |
| Krb5 | Ubuntu | esm-infra-legacy/trusty | * |
| Krb5 | Ubuntu | esm-infra/bionic | * |
| Krb5 | Ubuntu | esm-infra/focal | * |
| Krb5 | Ubuntu | esm-infra/xenial | * |
| Krb5 | Ubuntu | focal | * |
| Krb5 | Ubuntu | jammy | * |
| Krb5 | Ubuntu | mantic | * |
| Krb5 | Ubuntu | noble | * |
| Krb5 | Ubuntu | oracular | * |
| Krb5 | Ubuntu | plucky | * |
| Krb5 | Ubuntu | questing | * |
| Krb5 | Ubuntu | trusty | * |
| Krb5 | Ubuntu | trusty/esm | * |
| Krb5 | Ubuntu | xenial | * |
Potential Mitigations
- Choose a language or tool that provides automatic memory management, or makes manual memory management less error-prone.
- For example, glibc in Linux provides protection against free of invalid pointers.
- When using Xcode to target OS X or iOS, enable automatic reference counting (ARC) [REF-391].
- To help correctly and consistently manage memory when programming in C++, consider using a smart pointer class such as std::auto_ptr (defined by ISO/IEC ISO/IEC 14882:2003), std::shared_ptr and std::unique_ptr (specified by an upcoming revision of the C++ standard, informally referred to as C++ 1x), or equivalent solutions such as Boost.