Jonasbn
Monthly
NULL pointer dereference in Crypt::OpenSSL::PKCS12 before version 1.98 for Perl enables process crashes when any caller invokes info_as_hash() on a crafted PKCS#12 file containing a zero-length BMPSTRING bag attribute. The root cause is a zero-size Renew() call that Perl's memory allocator implements as a free() returning NULL, which is subsequently dereferenced inside strlen() within a call to newSVpvn(). With no public exploit identified at time of analysis and an EPSS of 0.19%, active exploitation is currently unlikely, though any service that parses attacker-supplied PKCS#12 data and calls info_as_hash() is directly exposed to denial of service.
Heap out-of-bounds read in the Crypt::OpenSSL::X509 Perl module (versions before 2.1.3) lets a crafted X.509 certificate leak adjacent heap memory to an application that enumerates certificate extensions. When code calls extensions(), extensions_by_long_name(), extensions_by_oid(), or has_extension_oid(), a certificate extension whose textual OID exceeds the fixed 129-byte buffer causes the returned hash key to include bytes read past the allocation, exposing process memory and risking a crash. No public exploit is identified at time of analysis and it is not in CISA KEV, but the fix is confirmed in release 2.1.3 and the flaw is trivially triggerable by any attacker who can supply a certificate.
Denial of service in the Crypt::OpenSSL::X509 Perl module before 2.1.3 lets a malformed X.509 certificate crash any Perl process that parses it. Four helper functions (basicC, ia5string, auth_att, keyid_data) dereference NULL pointers returned by OpenSSL's X509V3_EXT_d2i() on unparseable extensions - and keyid_data/auth_att additionally deref an akid->keyid field that is legitimately NULL for an empty Authority Key Identifier (DER 30 00). There is no public exploit identified at time of analysis, but the fix commit and a clear crash mechanism are published; CVSS is 7.5 (availability-only).
Heap out-of-bounds read in the Perl module Crypt::OpenSSL::PKCS12 before version 1.96 lets a crafted PKCS#12 file leak adjacent process heap memory into Perl scalars when its attributes are printed. Because print_attribute() copies a UTF8STRING value with strncpy into a buffer sized to the exact declared length and never NUL-terminates it, downstream strlen()/newSVpvn() reads past the buffer end. No public exploit identified at time of analysis, EPSS is low (0.35%), and it is not on CISA KEV, but the SSVC framework flags it as automatable with partial technical impact.
NULL pointer dereference in Crypt::OpenSSL::PKCS12 before version 1.98 for Perl enables process crashes when any caller invokes info_as_hash() on a crafted PKCS#12 file containing a zero-length BMPSTRING bag attribute. The root cause is a zero-size Renew() call that Perl's memory allocator implements as a free() returning NULL, which is subsequently dereferenced inside strlen() within a call to newSVpvn(). With no public exploit identified at time of analysis and an EPSS of 0.19%, active exploitation is currently unlikely, though any service that parses attacker-supplied PKCS#12 data and calls info_as_hash() is directly exposed to denial of service.
Heap out-of-bounds read in the Crypt::OpenSSL::X509 Perl module (versions before 2.1.3) lets a crafted X.509 certificate leak adjacent heap memory to an application that enumerates certificate extensions. When code calls extensions(), extensions_by_long_name(), extensions_by_oid(), or has_extension_oid(), a certificate extension whose textual OID exceeds the fixed 129-byte buffer causes the returned hash key to include bytes read past the allocation, exposing process memory and risking a crash. No public exploit is identified at time of analysis and it is not in CISA KEV, but the fix is confirmed in release 2.1.3 and the flaw is trivially triggerable by any attacker who can supply a certificate.
Denial of service in the Crypt::OpenSSL::X509 Perl module before 2.1.3 lets a malformed X.509 certificate crash any Perl process that parses it. Four helper functions (basicC, ia5string, auth_att, keyid_data) dereference NULL pointers returned by OpenSSL's X509V3_EXT_d2i() on unparseable extensions - and keyid_data/auth_att additionally deref an akid->keyid field that is legitimately NULL for an empty Authority Key Identifier (DER 30 00). There is no public exploit identified at time of analysis, but the fix commit and a clear crash mechanism are published; CVSS is 7.5 (availability-only).
Heap out-of-bounds read in the Perl module Crypt::OpenSSL::PKCS12 before version 1.96 lets a crafted PKCS#12 file leak adjacent process heap memory into Perl scalars when its attributes are printed. Because print_attribute() copies a UTF8STRING value with strncpy into a buffer sized to the exact declared length and never NUL-terminates it, downstream strlen()/newSVpvn() reads past the buffer end. No public exploit identified at time of analysis, EPSS is low (0.35%), and it is not on CISA KEV, but the SSVC framework flags it as automatable with partial technical impact.