CVE-2025-69419: Issue summary: Calling PKCS12_get_friendlyname() function on a maliciously crafted PKCS#12 file with a BMPString (UTF-16BE) friendly name containing non-ASCII…

PriorityP347high7.4CVSS 3.1

AVNACHPRNUINSUCHIHAN

EPSS

0.44%

36.0th percentile

Issue summary: Calling PKCS12_get_friendlyname() function on a maliciously crafted PKCS#12 file with a BMPString (UTF-16BE) friendly name containing non-ASCII BMP code point can trigger a one byte write before the allocated buffer. Impact summary: The out-of-bounds write can cause a memory corruption which can have various consequences including a Denial of Service. The OPENSSL_uni2utf8() function performs a two-pass conversion of a PKCS#12 BMPString (UTF-16BE) to UTF-8. In the second pass, when emitting UTF-8 bytes, the helper function bmp_to_utf8() incorrectly forwards the remaining UTF-16 source byte count as the destination buffer capacity to UTF8_putc(). For BMP code points above U+07FF, UTF-8 requires three bytes, but the forwarded capacity can be just two bytes. UTF8_putc() then returns -1, and this negative value is added to the output length without validation, causing the length to become negative. The subsequent trailing NUL byte is then written at a negative offset, causing write outside of heap allocated buffer. The vulnerability is reachable via the public PKCS12_get_friendlyname() API when parsing attacker-controlled PKCS#12 files. While PKCS12_parse() uses a different code path that avoids this issue, PKCS12_get_friendlyname() directly invokes the vulnerable function. Exploitation requires an attacker to provide a malicious PKCS#12 file to be parsed by the application and the attacker can just trigger a one zero byte write before the allocated buffer. 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 and 1.1.1 are vulnerable to this issue. OpenSSL 1.0.2 is not affected by this issue.

Affected

26 ranges· showing 25

Vendor	Product	Version range	Fixed in
debian	openssl	< openssl 3.0.18-1~deb12u2 (bookworm)	openssl 3.0.18-1~deb12u2 (bookworm)
openssl	openssl	>= 0 < 3.0.19-r0	3.0.19-r0
openssl	openssl	>= 0 < 3.3.6-r0	3.3.6-r0
openssl	openssl	>= 0 < 3.3.6-r0	3.3.6-r0
openssl	openssl	>= 0 < 3.5.5-r0	3.5.5-r0
openssl	openssl	>= 0 < 3.5.5-r0	3.5.5-r0
openssl	openssl	>= 0 < 1.1.1w-0+deb11u5	1.1.1w-0+deb11u5
openssl	openssl	>= 0 < 3.0.18-1~deb12u2	3.0.18-1~deb12u2
openssl	openssl	>= 0 < 3.5.4-1~deb13u2	3.5.4-1~deb13u2
openssl	openssl	>= 0 < 3.5.5-1	3.5.5-1
openssl	openssl	>= 0 < 3.0.2-0ubuntu1.21	3.0.2-0ubuntu1.21
openssl	openssl	>= 0 < 3.0.13-0ubuntu3.7	3.0.13-0ubuntu3.7
openssl	openssl	>= 0 < 3.5.3-1ubuntu3	3.5.3-1ubuntu3
openssl	openssl	>= 0 < 1.0.1f-1ubuntu2.27+esm12	1.0.1f-1ubuntu2.27+esm12
openssl	openssl	>= 0 < 1.0.2g-1ubuntu4.20+esm14	1.0.2g-1ubuntu4.20+esm14
openssl	openssl	>= 0 < 1.1.1-1ubuntu2.1~18.04.23+esm7	1.1.1-1ubuntu2.1~18.04.23+esm7
openssl	openssl	>= 0 < 1.1.1f-1ubuntu2.24+esm2	1.1.1f-1ubuntu2.24+esm2
openssl	openssl	>= 0 < 1.1.1-1ubuntu2.fips.2.1~18.04.23.7	1.1.1-1ubuntu2.fips.2.1~18.04.23.7
openssl	openssl	>= 0 < 1.1.1f-1ubuntu2.fips.24.2	1.1.1f-1ubuntu2.fips.24.2
openssl	openssl	>= 0 < 3.0.2-0ubuntu1.21+Fips1	3.0.2-0ubuntu1.21+Fips1
openssl	openssl	>= 1.1.1 < 1.1.1ze	1.1.1ze
openssl	openssl	>= 3.0.0 < 3.0.19	3.0.19
openssl	openssl	>= 3.3.0 < 3.3.6	3.3.6
openssl	openssl	>= 3.4.0 < 3.4.4	3.4.4
openssl	openssl	>= 3.5.0 < 3.5.5	3.5.5

CVSS provenance

nvdv3.17.4HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

osv7.4HIGH

vendor_debian7.4HIGH

vendor_redhat7.4HIGH

vendor_ubuntu6.1MEDIUM

Stop checking back — get the weekly exploitation signal.

Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.