CVE-2025-0838: Heap Buffer overflow in Abseil
Description
There exists a heap buffer overflow vulnerable in Abseil-cpp. The sized constructors, reserve(), and rehash() methods of absl::{flat,node}hash{set,map} did not impose an upper bound on their size argument. As a result, it was possible for a caller to pass a very large size that would cause an integer overflow when computing the size of the container's backing store, and a subsequent out-of-bounds memory write. Subsequent accesses to the container might also access out-of-bounds memory. We recommend upgrading past commit 5a0e2cb5e3958dd90bb8569a2766622cb74d90c1
Classification
CVE ID: CVE-2025-0838
CVSS Base Severity: MEDIUM
CVSS Base Score: 5.9
CVSS Vector: CVSS:4.0/AV:A/AC:H/AT:P/PR:L/UI:A/VC:L/VI:H/VA:L/SC:L/SI:H/SA:L
Problem Types
CWE-190 Integer Overflow or WraparoundAffected Products
Vendor: abseil
Product: abseil-cpp
Exploit Prediction Scoring System (EPSS)
EPSS Score: 0.03% (probability of being exploited)
EPSS Percentile: 4.16% (scored less or equal to compared to others)
EPSS Date: 2025-03-22 (when was this score calculated)
References
https://nvd.nist.gov/vuln/detail/CVE-2025-0838https://github.com/abseil/abseil-cpp/commit/5a0e2cb5e3958dd90bb8569a2766622cb74d90c1