CVE-2019-25050 — netCDF in GDAL 2

netCDF in GDAL 2.4.2 through 3.0.4 has a stack-based buffer overflow in nc4_get_att (called from nc4_get_att_tc and nc_get_att_text) and in uffd_cleanup (called from netCDFDataset::~netCDFDataset and netCDFDataset::~netCDFDataset).

01What is this vulnerability?

netCDF in GDAL 2.4.2 through 3.0.4 has a stack-based buffer overflow in nc4_get_att (called from nc4_get_att_tc and nc_get_att_text) and in uffd_cleanup (called from netCDFDataset::~netCDFDataset and netCDFDataset::~netCDFDataset).

02Affected products

Vendor	Product	Versions
n	a / n/a	n/a

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2021-07-20T06:46:38.000Z
• Last modified: 2024-08-05T03:00:18.922Z

09References

• github.com — https://github.com/google/oss-fuzz-vulns/blob/main/vulns/gdal/OSV-2020-392.yaml
• github.com — https://github.com/google/oss-fuzz-vulns/blob/main/vulns/gdal/OSV-2020-420.yaml
• bugs.chromium.org — https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=15143
• github.com — https://github.com/OSGeo/gdal/commit/767e3a56144f676ca738ef8f700e0e56035bd05a
• github.com — https://github.com/OSGeo/gdal/commit/27b9bf644bcf1208f7d6594bdd104cc8a8bb0646
• bugs.chromium.org — https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=15156