CVE-2023-0215

Publication date 7 February 2023

Last updated 24 July 2024

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

7.5 · High

Score breakdown

The public API function BIO_new_NDEF is a helper function used for streaming ASN.1 data via a BIO. It is primarily used internally to OpenSSL to support the SMIME, CMS and PKCS7 streaming capabilities, but may also be called directly by end user applications. The function receives a BIO from the caller, prepends a new BIO_f_asn1 filter BIO onto the front of it to form a BIO chain, and then returns the new head of the BIO chain to the caller. Under certain conditions, for example if a CMS recipient public key is invalid, the new filter BIO is freed and the function returns a NULL result indicating a failure. However, in this case, the BIO chain is not properly cleaned up and the BIO passed by the caller still retains internal pointers to the previously freed filter BIO. If the caller then goes on to call BIO_pop() on the BIO then a use-after-free will occur. This will most likely result in a crash. This scenario occurs directly in the internal function B64_write_ASN1() which may cause BIO_new_NDEF() to be called and will subsequently call BIO_pop() on the BIO. This internal function is in turn called by the public API functions PEM_write_bio_ASN1_stream, PEM_write_bio_CMS_stream, PEM_write_bio_PKCS7_stream, SMIME_write_ASN1, SMIME_write_CMS and SMIME_write_PKCS7. Other public API functions that may be impacted by this include i2d_ASN1_bio_stream, BIO_new_CMS, BIO_new_PKCS7, i2d_CMS_bio_stream and i2d_PKCS7_bio_stream. The OpenSSL cms and smime command line applications are similarly affected.

Status

Package Ubuntu Release Status
edk2 24.10 oracular
Not affected
24.04 LTS noble
Not affected
23.10 mantic
Not affected
23.04 lunar Ignored end of life, was needs-triage
22.10 kinetic Ignored end of life, was needs-triage
22.04 LTS jammy
Needs evaluation
20.04 LTS focal
Needs evaluation
18.04 LTS bionic
Needs evaluation
16.04 LTS xenial
Needs evaluation
14.04 LTS trusty Ignored end of standard support
nodejs 24.10 oracular
Not affected
24.04 LTS noble
Not affected
23.10 mantic
Not affected
23.04 lunar
Not affected
22.10 kinetic
Not affected
22.04 LTS jammy
Fixed 12.22.9~dfsg-1ubuntu3.3
20.04 LTS focal
Not affected
18.04 LTS bionic
Not affected
16.04 LTS xenial
Not affected
14.04 LTS trusty
Not affected
openssl 24.10 oracular
Fixed 3.0.8-1ubuntu1
24.04 LTS noble
Fixed 3.0.8-1ubuntu1
23.10 mantic
Fixed 3.0.8-1ubuntu1
23.04 lunar
Fixed 3.0.8-1ubuntu1
22.10 kinetic
Fixed 3.0.5-2ubuntu2.1
22.04 LTS jammy
Fixed 3.0.2-0ubuntu1.8
20.04 LTS focal
Fixed 1.1.1f-1ubuntu2.17
18.04 LTS bionic
Fixed 1.1.1-1ubuntu2.1~18.04.21
16.04 LTS xenial
14.04 LTS trusty
openssl1.0 22.10 kinetic Not in release
22.04 LTS jammy Not in release
20.04 LTS focal Not in release
18.04 LTS bionic
Fixed 1.0.2n-1ubuntu5.11
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release

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Severity score breakdown

Parameter Value
Base score 7.5 · High
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

Related Ubuntu Security Notices (USN)

    • USN-5844-1
    • OpenSSL vulnerabilities
    • 7 February 2023
    • USN-5845-1
    • OpenSSL vulnerabilities
    • 7 February 2023
    • USN-5845-2
    • OpenSSL vulnerabilities
    • 7 February 2023
    • USN-6564-1
    • Node.js vulnerabilities
    • 3 January 2024

Other references