The version of OpenSSL installed on the remote host is prior to 1.0.2zn. It is, therefore, affected by multiple vulnerabilities as referenced in the 1.0.2zn advisory.

  - Issue summary: A type confusion vulnerability exists in the signature verification of signed PKCS#7 data     where an ASN1_TYPE union member is accessed without first validating the type, causing an invalid or NULL     pointer dereference when processing malformed PKCS#7 data.  Impact summary: An application performing     signature verification of PKCS#7 data or calling directly the PKCS7_digest_from_attributes() function can     be caused to dereference an invalid or NULL pointer when reading, resulting in a Denial of Service.  The     function PKCS7_digest_from_attributes() accesses the message digest attribute value without validating its     type. When the type is not V_ASN1_OCTET_STRING, this results in accessing invalid memory through the     ASN1_TYPE union, causing a crash.  Exploiting this vulnerability requires an attacker to provide a     malformed signed PKCS#7 to an application that verifies it. The impact of the exploit is just a Denial of     Service, the PKCS7 API is legacy and applications should be using the CMS API instead. For these reasons     the issue was assessed as Low severity.  The FIPS modules in 3.5, 3.4, 3.3 and 3.0 are not affected by     this issue, as the PKCS#7 parsing implementation is outside the OpenSSL FIPS module boundary.  OpenSSL     3.6, 3.5, 3.4, 3.3, 3.0, 1.1.1 and 1.0.2 are vulnerable to this issue. Fixed in OpenSSL 1.0.2zn (Affected     since 1.0.2). (CVE-2026-22796)

  - Issue summary: Processing a malformed PKCS#12 file can trigger a NULL pointer dereference in the     PKCS12_item_decrypt_d2i_ex() function.  Impact summary: A NULL pointer dereference can trigger a crash     which leads to Denial of Service for an application processing PKCS#12 files.  The     PKCS12_item_decrypt_d2i_ex() function does not check whether the oct parameter is NULL before     dereferencing it. When called from PKCS12_unpack_p7encdata() with a malformed PKCS#12 file, this parameter     can be NULL, causing a crash. The vulnerability is limited to Denial of Service and cannot be escalated to     achieve code execution or memory disclosure.  Exploiting this issue requires an attacker to provide a     malformed PKCS#12 file to an application that processes it. For that reason the issue was assessed as Low     severity according to our Security Policy.  The FIPS modules in 3.6, 3.5, 3.4, 3.3 and 3.0 are not     affected by this issue, as the PKCS#12 implementation is outside the OpenSSL FIPS module boundary.
    OpenSSL 3.6, 3.5, 3.4, 3.3, 3.0, 1.1.1 and 1.0.2 are vulnerable to this issue. Fixed in OpenSSL 1.0.2zn     (Affected since 1.0.2). (CVE-2025-69421)

  - Issue summary: Writing large, newline-free data into a BIO chain using the line-buffering filter where the     next BIO performs short writes can trigger a heap-based out-of-bounds write.  Impact summary: This out-of-     bounds write can cause memory corruption which typically results in a crash, leading to Denial of Service     for an application.  The line-buffering BIO filter (BIO_f_linebuffer) is not used by default in TLS/SSL     data paths. In OpenSSL command-line applications, it is typically only pushed onto stdout/stderr on VMS     systems. Third-party applications that explicitly use this filter with a BIO chain that can short-write     and that write large, newline-free data influenced by an attacker would be affected. However, the     circumstances where this could happen are unlikely to be under attacker control, and BIO_f_linebuffer is     unlikely to be handling non-curated data controlled by an attacker. For that reason the issue was assessed     as Low severity.  The FIPS modules in 3.6, 3.5, 3.4, 3.3 and 3.0 are not affected by this issue, as the     BIO implementation is outside the OpenSSL FIPS module boundary.  OpenSSL 3.6, 3.5, 3.4, 3.3, 3.0, 1.1.1     and 1.0.2 are vulnerable to this issue. Fixed in OpenSSL 1.0.2zn (Affected since 1.0.2). (CVE-2025-68160)

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

Detections

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OpenSSL 1.0.2 < 1.0.2zn Multiple Vulnerabilities

high Nessus Plugin ID 296767

Version 1.3