Описание
Open Babel has an out-of-bounds read in CIF transform3d::DescribeAsString
Summary
A memory-safety vulnerability in Open Babel's CIF file format parser allowed an out-of-bounds read when reading a crafted input file.
Details
The flaw was in
OpenBabel::transform3d::DescribeAsString. A malformed symmetry-operation string caused the parser to read past the end of its internal buffer while formatting the description.Impact
Open Babel is a C++ library and CLI used to read and write chemistry file formats; it is shipped by Linux distributions and embedded in services that may parse untrusted input. Triggering this vulnerability requires the victim to open a malicious CIF file with the
obabeltool, the OBConversion API, or any of the language bindings.Affected versions
All releases up to and including 3.1.1.
Patched version
3.2.0 (released 2026-05-26).
Patch
Fix commit: https://github.com/openbabel/openbabel/commit/e23a224b Tracked in #2862.
A minimized reproducer for this CVE is checked in at
test/files/fuzz_regress/cve-2026-2704.cifand is exercised on every CI build under ASAN+UBSAN by thefuzzregresstestharness.Credit
Reported by Vedant Madane (@VedantMadane).
Ссылки
- https://github.com/openbabel/openbabel/security/advisories/GHSA-6xw4-2g22-26h8
- https://nvd.nist.gov/vuln/detail/CVE-2026-2704
- https://github.com/openbabel/openbabel/issues/2848
- https://github.com/openbabel/openbabel/pull/2862
- https://github.com/VedantMadane/openbabel/commit/e23a224b8fd9d7c2a7cde9ef4ec6afb4c05aa08a
- https://github.com/oneafter/0128/blob/main/ob1/repro.cif
- https://github.com/openbabel/openbabel/releases/tag/openbabel-3-2-0
- https://vuldb.com/?ctiid.346650
- https://vuldb.com/?id.346650
- https://vuldb.com/?submit.754378
- https://vuldb.com/submit/754378
- https://vuldb.com/vuln/346650
- https://vuldb.com/vuln/346650/cti
Пакеты
openbabel
< 3.2.0
3.2.0
Связанные уязвимости
A security vulnerability has been detected in Open Babel up to 3.1.1. The affected element is the function OpenBabel::transform3d::DescribeAsString of the file src/math/transform3d.cpp of the component CIF File Handler. The manipulation leads to out-of-bounds read. It is possible to initiate the attack remotely. The exploit has been disclosed publicly and may be used. Upgrading to version 3.2.0 is sufficient to fix this issue. The identifier of the patch is e23a224b8fd9d7c2a7cde9ef4ec6afb4c05aa08a. It is suggested to install a patch to address this issue.
A security vulnerability has been detected in Open Babel up to 3.1.1. The affected element is the function OpenBabel::transform3d::DescribeAsString of the file src/math/transform3d.cpp of the component CIF File Handler. The manipulation leads to out-of-bounds read. It is possible to initiate the attack remotely. The exploit has been disclosed publicly and may be used. Upgrading to version 3.2.0 is sufficient to fix this issue. The identifier of the patch is e23a224b8fd9d7c2a7cde9ef4ec6afb4c05aa08a. It is suggested to install a patch to address this issue.
A security vulnerability has been detected in Open Babel up to 3.1.1. ...
