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

The remote Ubuntu 22.04 LTS / 24.04 LTS / 24.10 / 25.04 host has packages installed that are affected by a vulnerability as referenced in the USN-7505-1 advisory.

    It was discovered that Abseil incorrectly handled memory with the upper bound of the size argument. An     attacker could possibly use this issue to cause a denial of service or memory corruption.

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Debian 11 host has packages installed that are affected by a vulnerability as referenced in the dla-4116 advisory.

    -------------------------------------------------------------------------     Debian LTS Advisory DLA-4116-1                debian-lts@lists.debian.org     https://www.debian.org/lts/security/                         Tobias Frost     April 05, 2025                                https://wiki.debian.org/LTS
    -------------------------------------------------------------------------

    Package        : abseil     Version        : 0~20200923.3-2+deb11u1     CVE ID         : CVE-2025-0838     Debian Bug     : 1098903

    A vulnerability has been found in abseil, a collection of open-source C++     libraries that extend the C++ standard library, which might cause an heap     buffer overflow.

    CVE-2025-0838

        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.

    For Debian 11 bullseye, this problem has been fixed in version     0~20200923.3-2+deb11u1.

    We recommend that you upgrade your abseil packages.

    For the detailed security status of abseil please refer to     its security tracker page at:
    https://security-tracker.debian.org/tracker/abseil

    Further information about Debian LTS security advisories, how to apply     these updates to your system and frequently asked questions can be     found at: https://wiki.debian.org/LTS     Attachment:
    signature.asc     Description: PGP signature

Tenable has extracted the preceding description block directly from the Debian security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - 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 (CVE-2025-0838)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Severity
236869	Ubuntu 22.04 LTS / 24.04 LTS / 24.10 / 25.04 : Abseil vulnerability (USN-7505-1)	Nessus	Ubuntu Local Security Checks	medium
233938	Debian dla-4116 : libabsl-dev - security update	Nessus	Debian Local Security Checks	medium
231469	Linux Distros Unpatched Vulnerability : CVE-2025-0838	Nessus	Misc.	medium

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