https://vulnerability.circl.lu Contains only the most 10 recent entries. http://www.rssboard.org/rss-specification python-feedgen en Wed, 30 Sep 2026 19:39:09 +0000 https://vulnerability.circl.lu/vuln/certfr-2026-avi-1241 certfr-2026-avi-1241 https://vulnerability.circl.lu/vuln/certfr-2026-avi-1241 https://vulnerability.circl.lu/vuln/fkie_cve-2026-75805 <p>Issue summary: A CMP client that requests certificate revocation on the basis of a PKCS#10 CSR may dereference a NULL pointer and terminate abnormally when processing a crafted revocation response.</p> <p>Impact summary: The NULL pointer dereference happens on a read which leads to a crash and a Denial of Service for the affected client application.</p> <p>CWE: CWE-476: NULL-pointer dereference</p> <p>Description: A CMP client revoking a certificate has to tell the server which certificate to revoke, and may do so by supplying a PKCS#10 CSR instead of the certificate itself or its issuer name and serial number. This is &#39;openssl cmp -cmd rr -csr &lt;file&gt;&#39; on the command line, or OSSL_CMP_exec_RR_ses() with the certificate supplied via OSSL_CMP_CTX_set1_p10CSR() through the API.</p> <p>A CSR does not contain the issuer name and serial number of the certificate, so the client does not send them. A server may optionally name the certificate it revoked in its response, and the client then compares that name against what it sent. Having sent neither an issuer name nor a serial number, it has nothing to compare against, and a server returning a specially crafted name causes the client to read from a NULL pointer and crash.</p> <p>The revocation response is checked for valid message protection before the affected code is reached, so an attacker must be a malicious or compromised CMP server, or a man-in-the-middle in possession of the secret used for message protection. Clients that identify the certificate to be…</p> <p>Issue summary: A CMP client that requests certificate revocation on the basis of a PKCS#10 CSR may dereference a NULL pointer and terminate abnormally when processing a crafted revocation response.</p> <p>Impact summary: The NULL pointer dereference happens on a read which leads to a crash and a Denial of Service for the affected client application.</p> <p>CWE: CWE-476: NULL-pointer dereference</p> <p>Description: A CMP client revoking a certificate has to tell the server which certificate to revoke, and may do so by supplying a PKCS#10 CSR instead of the certificate itself or its issuer name and serial number. This is &#39;openssl cmp -cmd rr -csr &lt;file&gt;&#39; on the command line, or OSSL_CMP_exec_RR_ses() with the certificate supplied via OSSL_CMP_CTX_set1_p10CSR() through the API.</p> <p>A CSR does not contain the issuer name and serial number of the certificate, so the client does not send them. A server may optionally name the certificate it revoked in its response, and the client then compares that name against what it sent. Having sent neither an issuer name nor a serial number, it has nothing to compare against, and a server returning a specially crafted name causes the client to read from a NULL pointer and crash.</p> <p>The revocation response is checked for valid message protection before the affected code is reached, so an attacker must be a malicious or compromised CMP server, or a man-in-the-middle in possession of the secret used for message protection. Clients that identify the certificate to be…</p> https://vulnerability.circl.lu/vuln/fkie_cve-2026-75805 https://vulnerability.circl.lu/vuln/ghsa-gpg3-m652-f2vc <p>Issue summary: A CMP client that requests certificate revocation on the basis of a PKCS#10 CSR may dereference a NULL pointer and terminate abnormally when processing a crafted revocation response.</p> <p>Impact summary: The NULL pointer dereference happens on a read which leads to a crash and a Denial of Service for the affected client application.</p> <p>CWE: CWE-476: NULL-pointer dereference</p> <p>Description: A CMP client revoking a certificate has to tell the server which certificate to revoke, and may do so by supplying a PKCS#10 CSR instead of the certificate itself or its issuer name and serial number. This is &#39;openssl cmp -cmd rr -csr &lt;file&gt;&#39; on the command line, or OSSL_CMP_exec_RR_ses() with the certificate supplied via OSSL_CMP_CTX_set1_p10CSR() through the API.</p> <p>A CSR does not contain the issuer name and serial number of the certificate, so the client does not send them. A server may optionally name the certificate it revoked in its response, and the client then compares that name against what it sent. Having sent neither an issuer name nor a serial number, it has nothing to compare against, and a server returning a specially crafted name causes the client to read from a NULL pointer and crash.</p> <p>The revocation response is checked for valid message protection before the affected code is reached, so an attacker must be a malicious or compromised CMP server, or a man-in-the-middle in possession of the secret used for message protection. Clients that identify the certificate to be…</p> <p>Issue summary: A CMP client that requests certificate revocation on the basis of a PKCS#10 CSR may dereference a NULL pointer and terminate abnormally when processing a crafted revocation response.</p> <p>Impact summary: The NULL pointer dereference happens on a read which leads to a crash and a Denial of Service for the affected client application.</p> <p>CWE: CWE-476: NULL-pointer dereference</p> <p>Description: A CMP client revoking a certificate has to tell the server which certificate to revoke, and may do so by supplying a PKCS#10 CSR instead of the certificate itself or its issuer name and serial number. This is &#39;openssl cmp -cmd rr -csr &lt;file&gt;&#39; on the command line, or OSSL_CMP_exec_RR_ses() with the certificate supplied via OSSL_CMP_CTX_set1_p10CSR() through the API.</p> <p>A CSR does not contain the issuer name and serial number of the certificate, so the client does not send them. A server may optionally name the certificate it revoked in its response, and the client then compares that name against what it sent. Having sent neither an issuer name nor a serial number, it has nothing to compare against, and a server returning a specially crafted name causes the client to read from a NULL pointer and crash.</p> <p>The revocation response is checked for valid message protection before the affected code is reached, so an attacker must be a malicious or compromised CMP server, or a man-in-the-middle in possession of the secret used for message protection. Clients that identify the certificate to be…</p> https://vulnerability.circl.lu/vuln/ghsa-gpg3-m652-f2vc https://vulnerability.circl.lu/vuln/ubuntu-cve-2026-75805 <p><strong>Affected:</strong> Ubuntu:22.04:LTS: openssl, Ubuntu:Pro:22.04:LTS: nodejs, Ubuntu:Pro:FIPS-preview:22.04:LTS: openssl, Ubuntu:Pro:FIPS-preview:22.04:LTS: openssl-fips, Ubuntu:Pro:FIPS-updates:22.04:LTS: openssl, Ubuntu:Pro:FIPS-updates:22.04:LTS: openssl-fips, Ubuntu:24.04:LTS: edk2, Ubuntu:24.04:LTS: openssl, Ubuntu:Pro:FIPS-updates:24.04:LTS: openssl-fips, Ubuntu:26.04:LTS: edk2 and 2 more</p> <p>NULL Pointer Dereference in CMP Client Revocation Response Handling</p> <p><strong>Affected:</strong> Ubuntu:22.04:LTS: openssl, Ubuntu:Pro:22.04:LTS: nodejs, Ubuntu:Pro:FIPS-preview:22.04:LTS: openssl, Ubuntu:Pro:FIPS-preview:22.04:LTS: openssl-fips, Ubuntu:Pro:FIPS-updates:22.04:LTS: openssl, Ubuntu:Pro:FIPS-updates:22.04:LTS: openssl-fips, Ubuntu:24.04:LTS: edk2, Ubuntu:24.04:LTS: openssl, Ubuntu:Pro:FIPS-updates:24.04:LTS: openssl-fips, Ubuntu:26.04:LTS: edk2 and 2 more</p> <p>NULL Pointer Dereference in CMP Client Revocation Response Handling</p> https://vulnerability.circl.lu/vuln/ubuntu-cve-2026-75805