Detections
Analytics
MiracleLinux 9 : compat-openssl11-1.1.1k-5.el9_8.6 (AXSA:2026-2042:05)
high Nessus Plugin ID 365555
Synopsis
The remote MiracleLinux host is missing a security update.Description
The remote MiracleLinux 9 host has a package installed that is affected by a vulnerability as referenced in the AXSA:2026-2042:05 advisory.The key-wrap OID is potentially attacker-controlled on the wire. CMS unwrapping allows both id-aesNNN- wrap-pad and id-aesNNN-wrap ciphers. An attacker can take a legitimate message and change a single OID byte to select the padded variant while leaving the message otherwise valid. Since the unwrap key is derived from the recipient's private operation (ECDH key agreement or ML-KEM decapsulation), the RFC 5649 integrity check cannot pass, and the decryption fails with integrity failure. The write is a fixed-size (8-byte), fixed-value (zero) heap overflow immediately past the allocation, requires no special configuration, and is reachable from the public CMS_decrypt() function. The consequence is a heap corruption leading to a Denial of Service. The fix in the CMS code sizes the unwrap output buffer for the worst case so a failed unwrap cannot write past the allocation. FIPS impact: no As the CMS code lives outside the FIPS module boundary, no FIPS modules are affected by this CVE.
CVE-2026-84782 Issue summary: The DTLS retransmission logic does not correctly handle a handshake message write that is suspended part-way through. The retransmitted message can be read past the message buffer and the retransmission overwrites the internal state the suspended write needs to resume correctly. Impact summary: The retransmitted message can disclose a heap memory to the peer as plaintext handshake data or cause a crash and a Denial of Service when the read reaches an unmapped memory region. CWE: CWE-125: Out- of-bounds Read Description: DTLS handshake messages can be written out in multiple fragments, and a write can suspend mid-message (returning WANT_WRITE) if the underlying transport temporarily cannot accept more data. While such a write is suspended, the DTLS retransmission timer may independently fire and ask the retransmission logic to resend an earlier, already-acknowledged-as-sent message from its retransmit queue.
The retransmission logic reused the same internal buffer and position tracking as the message that was still being written, without resetting the position back to the start of the message being retransmitted.
As a result the retransmission was read starting from wherever the suspended write had left off, producing a mislabelled message whose body was leftover bytes from the other, larger message still in flight - content that was never meant to be sent at that point, and which could run past the end of the allocated buffer. Separately, even when the retransmission is positioned correctly, allowing it to run to completion while another write is suspended overwrites the same shared bookkeeping that the suspended write depends on to resume. When the application later resumes the suspended write (via a subsequent SSL_read(), SSL_write(), SSL_accept(), or SSL_connect() call), it finds that bookkeeping in a state inconsistent with the message and aborts the process in a debugging build. The fix resets the retransmission's read position to the start of the message before resending, and skips retransmission entirely whenever a handshake write is still suspended, deferring to the next call that resumes it instead. FIPS impact: no The affected code is outside the FIPS module boundary.
Tenable has extracted the preceding description block directly from the MiracleLinux security advisory.
Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.
Solution
Update the affected compat-openssl11 package.See Also
Plugin Details
Severity: High
ID: 365555
File Name: miracle_linux_AXSA-2026-2042.nasl
Version: 1.1
Type: Local
Published: 10/14/2026
Updated: 10/14/2026
Supported Sensors: Nessus Agent, Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 6.5
Percentile: 96.46
Vendor
Vendor Severity: Moderate
CVSS v2
Risk Factor: High
Base Score: 8.5
Temporal Score: 6.3
Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:C
CVSS Score Source: CVE-2026-84782
CVSS v3
Risk Factor: High
Base Score: 8.2
Temporal Score: 7.1
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
Vulnerability Information
CPE: cpe:/o:miracle:linux:9, p-cpe:/a:miracle:linux:compat-openssl11
Required KB Items: Host/local_checks_enabled, Host/MiracleLinux/release, Host/MiracleLinux/rpm-list, Host/cpu
Exploit Ease: No known exploits are available
Patch Publication Date: 10/14/2026
Vulnerability Publication Date: 9/29/2026
Reference Information
CVE: CVE-2026-84782