[pull] master from google:master#164
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This pull request integrates the pam-ipmi project into OSS-Fuzz,
enabling continuous
fuzzing of its special group password management and encryption logic.
Summary of Changes
1. Project Configuration
* Added projects/pam-ipmi/project.yaml with project metadata and contact
information.
* Added projects/pam-ipmi/Dockerfile to install build-time dependencies
(libpam0g-dev,
libssl-dev, meson, ninja-build) and prepare the build environment.
2. Build & Integration
* Added projects/pam-ipmi/build.sh to:
* Compile src/pam_ipmisave/pam_ipmisave.c with address sanitizer
instrumentation.
* Link the fuzzer harness against libcrypto and libpam.
* Package the seed corpus for the fuzzing engine.
3. Fuzzer Harness
* Added projects/pam-ipmi/pam_ipmi_fuzzer.c:
* Targets update_pass_special_file, the core logic responsible for
parsing,
decrypting, updating, and re-encrypting the IPMI special password file
(/etc/ipmi_pass).
* Mocks file system locks (lckpwdf/ulckpwdf) to allow safe execution
within the
fuzzing container.
* Provides a structured input split to exercise different usernames,
passwords, and
initial file states.
4. Seed Corpus
* Added projects/pam-ipmi/corpus/seed1, containing a valid
metapassstruct header to
assist the fuzzer in reaching the deeper decryption and modification
logic.
Coverage Impact
Local coverage analysis shows that the fuzzer currently exercises the
early parsing and
error-handling paths of the target function. Fixing the identified
buffer overflow will
allow the fuzzer to penetrate the remaining ~80% of the code, including
the
OpenSSL-based encryption and decryption routines.
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