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Published: 26 January 2024

Issue summary: Processing a maliciously formatted PKCS12 file may lead OpenSSL to crash leading to a potential Denial of Service attack Impact summary: Applications loading files in the PKCS12 format from untrusted sources might terminate abruptly. A file in PKCS12 format can contain certificates and keys and may come from an untrusted source. The PKCS12 specification allows certain fields to be NULL, but OpenSSL does not correctly check for this case. This can lead to a NULL pointer dereference that results in OpenSSL crashing. If an application processes PKCS12 files from an untrusted source using the OpenSSL APIs then that application will be vulnerable to this issue. OpenSSL APIs that are vulnerable to this are: PKCS12_parse(), PKCS12_unpack_p7data(), PKCS12_unpack_p7encdata(), PKCS12_unpack_authsafes() and PKCS12_newpass(). We have also fixed a similar issue in SMIME_write_PKCS7(). However since this function is related to writing data we do not consider it security significant. The FIPS modules in 3.2, 3.1 and 3.0 are not affected by this issue.


Priority reason:
Upstream OpenSSL developers have rated this to be a low severity issue



Cvss 3 Severity Score


Score breakdown


Package Release Status
Launchpad, Ubuntu, Debian
trusty Needs triage

Released (1.0.2g-1ubuntu4.20+esm11)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
Released (1.1.1-1ubuntu2.1~18.04.23+esm4)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
Released (1.1.1f-1ubuntu2.21)
Released (3.0.2-0ubuntu1.14)
Released (3.0.10-1ubuntu2.2)
Released (3.0.13)
lunar Ignored
(end of life, was needs-triage)
upstream:;a=commit;h=09df4395b5071217b76dc7d3d2e630eb8c5a79c2 (3.x)
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Needs triage

focal Does not exist

jammy Does not exist

lunar Does not exist

mantic Does not exist

upstream Needs triage

Launchpad, Ubuntu, Debian
trusty Not vulnerable
(uses system openssl)
xenial Needs triage

bionic Needs triage

focal Not vulnerable
(uses system openssl)
jammy Needed

lunar Not vulnerable
(uses system openssl)
mantic Not vulnerable
(uses system openssl)
upstream Needs triage

Launchpad, Ubuntu, Debian
trusty Ignored
(end of standard support)
xenial Needs triage

bionic Needs triage

focal Needed

jammy Needed

mantic Needed

upstream Needs triage

lunar Ignored
(end of life, was needs-triage)

Severity score breakdown

Parameter Value
Base score 5.5
Attack vector Local
Attack complexity Low
Privileges required None
User interaction Required
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H