GHSA-9v9h-cgj8-h64p

Source
https://github.com/advisories/GHSA-9v9h-cgj8-h64p
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2024/01/GHSA-9v9h-cgj8-h64p/GHSA-9v9h-cgj8-h64p.json
Aliases
Published
2024-01-26T09:30:23Z
Modified
2024-05-02T13:32:49.422833Z
Details

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: PKCS12parse(), PKCS12unpackp7data(), PKCS12unpackp7encdata(), PKCS12unpackauthsafes() and PKCS12newpass().

We have also fixed a similar issue in SMIMEwritePKCS7(). 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.

References

Affected packages

PyPI / cryptography

Package

Name
cryptography

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0The exact introduced commit is unknown
Fixed
42.0.2

Affected versions

0.*

0.1
0.2
0.2.1
0.2.2
0.3
0.4
0.5
0.5.1
0.5.2
0.5.3
0.5.4
0.6
0.6.1
0.7
0.7.1
0.7.2
0.8
0.8.1
0.8.2
0.9
0.9.1
0.9.2
0.9.3

1.*

1.0
1.0.1
1.0.2
1.1
1.1.1
1.1.2
1.2
1.2.1
1.2.2
1.2.3
1.3
1.3.1
1.3.2
1.3.3
1.3.4
1.4
1.5
1.5.1
1.5.2
1.5.3
1.6
1.7
1.7.1
1.7.2
1.8
1.8.1
1.8.2
1.9

2.*

2.0
2.0.1
2.0.2
2.0.3
2.1
2.1.1
2.1.2
2.1.3
2.1.4
2.2
2.2.1
2.2.2
2.3
2.3.1
2.4
2.4.1
2.4.2
2.5
2.6
2.6.1
2.7
2.8
2.9
2.9.1
2.9.2

3.*

3.0
3.1
3.1.1
3.2
3.2.1
3.3
3.3.1
3.3.2
3.4
3.4.1
3.4.2
3.4.3
3.4.4
3.4.5
3.4.6
3.4.7
3.4.8

35.*

35.0.0

36.*

36.0.0
36.0.1
36.0.2

37.*

37.0.0
37.0.1
37.0.2
37.0.3
37.0.4

38.*

38.0.0
38.0.1
38.0.2
38.0.3
38.0.4

39.*

39.0.0
39.0.1
39.0.2

40.*

40.0.0
40.0.1
40.0.2

41.*

41.0.0
41.0.1
41.0.2
41.0.3
41.0.4
41.0.5
41.0.6
41.0.7

42.*

42.0.0
42.0.1

Ecosystem specific 

{
    "affected_functions": [
        "cryptography.hazmat.backends.openssl.backend.load_pkcs12"
    ]
}