An issue was discovered in hyper v0.13.7. h2-0.2.4 Stream stacking occurs when the H2 component processes HTTP2 RST_STREAM frames. As a result, the memory and CPU usage are high which can lead to a Denial of Service (DoS).

The remote SUSE Linux SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 host has a package installed that is affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:3022-1 advisory.

    Update to version 0.15.0~17.

    - CVE-2023-26964: hyper,h2: high resource consumption due to stream stacking when H2 component processes       `HTTP2 RST_STREAM` frames (bsc#1210346).
    - CVE-2024-32650: rust-rustls: infinite loop in `rustls::conn::ConnectionCommon:complete_io()` when     processing client       input network input (bsc#1223238).
    - CVE-2025-3416: openssl: use-after-free in `Md::fetch` and `Cipher::fetch` (bsc#1242611).
    - CVE-2026-25727: time: stack exhaustion in the RFC 2822 date parser when processing certain user provided     input       (bsc#1257923).
    - CVE-2026-41676: openssl: short buffer overflow via `Deriver:derive` and `PkeyCtxRef:derive` when using     OpenSSL 1.1.1       (bsc#1270206).
    - CVE-2026-41677: openssl: out-of-bounds read in PEM password callback when returning an oversized length       (bsc#1270559).
    - CVE-2026-41678: openssl: OOB write due to incorrect bounds assertion in `aes::unwrap_key()`     (bsc#1270693).
    - CVE-2026-41681: openssl: stack corruption due to `MdCtxRef::digest_final()` writing past caller buffer     with no length       check (bsc#1270736).
    - CVE-2026-41898: openssl: information leak to network peers due to unchecked callback-returned length in     PSK and       cookie generate trampolines (bsc#1270869).
    - CVE-2026-42327: openssl: undefined behavior in `X509Ref::ocsp_responders` when processing certificates     with non-UTF-8       OCSP URLs (bsc#1270512).
    - CVE-2026-44662: openssl: heap buffer overflow when encrypting with AES key-wrap-with-padding     (bsc#1270938).
    - CVE-2026-45784: openssl: out-of-bounds write in `CipherCtxRef::cipher_update_inplace` for AES-KW-PAD     ciphers       (bsc#1270948).

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

Note that Nessus has not tested for these issues 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.

  - An issue was discovered in hyper v0.13.7. h2-0.2.4 Stream stacking occurs when the H2 component processes     HTTP2 RST_STREAM frames. As a result, the memory and CPU usage are high which can lead to a Denial of     Service (DoS). (CVE-2023-26964)

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

The version of kata-containers / rpm-ostree installed on the remote Azure Linux 3.0 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the CVE-2023-26964 advisory.

  - An issue was discovered in hyper v0.13.7. h2-0.2.4 Stream stacking occurs when the H2 component processes     HTTP2 RST_STREAM frames. As a result, the memory and CPU usage are high which can lead to a Denial of     Service (DoS). (CVE-2023-26964)

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

The remote openSUSE 15 host has packages installed that are affected by multiple vulnerabilities as referenced in the openSUSE-SU-2024:0294-1 advisory.

    - kanidm version 1.3.3~git0.f075d13:
      * Release 1.3.3
      * Mail substr index (#2981)

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

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

The version of kata-containers / rpm-ostree installed on the remote CBL Mariner 2.0 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the CVE-2023-26964 advisory.

  - An issue was discovered in hyper v0.13.7. h2-0.2.4 Stream stacking occurs when the H2 component processes     HTTP2 RST_STREAM frames. As a result, the memory and CPU usage are high which can lead to a Denial of     Service (DoS). (CVE-2023-26964)

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

The remote Fedora 39 host has packages installed that are affected by a vulnerability as referenced in the FEDORA-2023-d88521bfc5 advisory.

    Recent updates for the `tokio`, `h2`, and `openssl` crates addressed some (potential or confirmed)     security or soundness issues:

    - `tokio`: [RUSTSEC-2023-0005](https://rustsec.org/advisories/RUSTSEC-2023-0005.html)
    - `h2`: [RUSTSEC-2023-0034](https://rustsec.org/advisories/RUSTSEC-2023-0034.html) /     [CVE-2023-26964](https://nvd.nist.gov/vuln/detail/CVE-2023-26964)
    - `openssl`: [RUSTSEC-2023-0022](https://rustsec.org/advisories/RUSTSEC-2023-0022.html),     [RUSTSEC-2023-0023](https://rustsec.org/advisories/RUSTSEC-2023-0023.html),     [RUSTSEC-2023-0024](https://rustsec.org/advisories/RUSTSEC-2023-0024.html)

    This update contains rebuilds of all affected applications against the latest versions of these crates,     which have addressed all linked issues.

Tenable has extracted the preceding description block directly from the Fedora 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 SUSE Linux SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 / openSUSE 15 host has a package installed that is affected by multiple vulnerabilities as referenced in the SUSE-SU-2023:2603-1 advisory.

    - CVE-2022-31394: Fixed possible HTTP2 attacks by specifying the HTTP/2 SETTINGS_MAX_HEADER_LIST_SIZE     (bsc#1208552).
    - CVE-2023-26964: Fixed high memory and CPU usage when stream stacking occurs when H2 processes HTTP2     RST_STREAM frames (bsc#1210345).

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

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

The remote Fedora 37 host has packages installed that are affected by a vulnerability as referenced in the FEDORA-2023-37ae269843 advisory.

    Recent updates for the `tokio`, `h2`, and `openssl` crates addressed some (potential or confirmed)     security or soundness issues:

    - `tokio`: [RUSTSEC-2023-0005](https://rustsec.org/advisories/RUSTSEC-2023-0005.html)
    - `h2`: [RUSTSEC-2023-0034](https://rustsec.org/advisories/RUSTSEC-2023-0034.html) /     [CVE-2023-26964](https://nvd.nist.gov/vuln/detail/CVE-2023-26964)
    - `openssl`: [RUSTSEC-2023-0022](https://rustsec.org/advisories/RUSTSEC-2023-0022.html),     [RUSTSEC-2023-0023](https://rustsec.org/advisories/RUSTSEC-2023-0023.html),     [RUSTSEC-2023-0024](https://rustsec.org/advisories/RUSTSEC-2023-0024.html)

    This update contains rebuilds of all affected applications against the latest versions of these crates,     which have addressed all linked issues.


Tenable has extracted the preceding description block directly from the Fedora 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 Fedora 38 host has packages installed that are affected by a vulnerability as referenced in the FEDORA-2023-cc21019773 advisory.

    Recent updates for the `tokio`, `h2`, and `openssl` crates addressed some (potential or confirmed)     security or soundness issues:

    - `tokio`: [RUSTSEC-2023-0005](https://rustsec.org/advisories/RUSTSEC-2023-0005.html)
    - `h2`: [RUSTSEC-2023-0034](https://rustsec.org/advisories/RUSTSEC-2023-0034.html) /     [CVE-2023-26964](https://nvd.nist.gov/vuln/detail/CVE-2023-26964)
    - `openssl`: [RUSTSEC-2023-0022](https://rustsec.org/advisories/RUSTSEC-2023-0022.html),     [RUSTSEC-2023-0023](https://rustsec.org/advisories/RUSTSEC-2023-0023.html),     [RUSTSEC-2023-0024](https://rustsec.org/advisories/RUSTSEC-2023-0024.html)

    This update contains rebuilds of all affected applications against the latest versions of these crates,     which have addressed all linked issues.

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

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

ID	Name	Product	Family	Type	Severity
327293	SUSE SLED15 / SLES15 Security Update : sccache (SUSE-SU-2026:3022-1)	Nessus	SuSE Local Security Checks	Local	critical
259383	Linux Distros Unpatched Vulnerability : CVE-2023-26964	Nessus	Misc.	Local	high
215856	Azure Linux 3.0 Security Update: kata-containers / rpm-ostree (CVE-2023-26964)	Nessus	Azure Linux Local Security Checks	Local	high
206879	openSUSE 15 Security Update : kanidm (openSUSE-SU-2024:0294-1)	Nessus	SuSE Local Security Checks	Local	high
201597	CBL Mariner 2.0 Security Update: kata-containers / rpm-ostree (CVE-2023-26964)	Nessus	MarinerOS Local Security Checks	Local	high
185189	Fedora 39 : clevis-pin-tpm2 / greetd / keyring-ima-signer / libkrun / etc (2023-d88521bfc5)	Nessus	Fedora Local Security Checks	Local	high
177548	SUSE SLED15 / SLES15 / openSUSE 15 Security Update : rustup (SUSE-SU-2023:2603-1)	Nessus	SuSE Local Security Checks	Local	high
176025	Fedora 37 : clevis-pin-tpm2 / greetd / keyring-ima-signer / libkrun / etc (2023-37ae269843)	Nessus	Fedora Local Security Checks	Local	high
175193	Fedora 38 : clevis-pin-tpm2 / greetd / keyring-ima-signer / libkrun / etc (2023-cc21019773)	Nessus	Fedora Local Security Checks	Local	high

Detections

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CVE-2023-26964

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Tenable Plugins

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