Bugzilla – Bug 1213383
VUL-0: CVE-2023-2975: openssl-3: AES-SIV cipher implementation contains a bug that causes it to ignore empty associated data entries
Last modified: 2024-06-07 13:34:12 UTC
CVE-2023-2975 Issue summary: The AES-SIV cipher implementation contains a bug that causes it to ignore empty associated data entries which are unauthenticated as a consequence. Impact summary: Applications that use the AES-SIV algorithm and want to authenticate empty data entries as associated data can be mislead by removing adding or reordering such empty entries as these are ignored by the OpenSSL implementation. We are currently unaware of any such applications. The AES-SIV algorithm allows for authentication of multiple associated data entries along with the encryption. To authenticate empty data the application has to call EVP_EncryptUpdate() (or EVP_CipherUpdate()) with NULL pointer as the output buffer and 0 as the input buffer length. The AES-SIV implementation in OpenSSL just returns success for such a call instead of performing the associated data authentication operation. The empty data thus will not be authenticated. As this issue does not affect non-empty associated data authentication and we expect it to be rare for an application to use empty associated data entries this is qualified as Low severity issue. References: http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2023-2975 https://bugzilla.redhat.com/show_bug.cgi?id=2223016 https://www.cve.org/CVERecord?id=CVE-2023-2975 http://www.openwall.com/lists/oss-security/2023/07/15/1 https://seclists.org/oss-sec/2023/q3/39 https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=00e2f5eea29994d19293ec4e8c8775ba73678598 https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=6a83f0c958811f07e0d11dfc6b5a6a98edfd5bdc https://www.openssl.org/news/secadv/20230714.txt
Summary of submissions: > Codestream Package Request > ------------------------------------------------------- > SLE-15-SP4:Update openssl-3 sr#303278 > SLE-15-SP5:Update openssl-3 sr#303280 > SUSE:ALP:Source:Standard:1.0 openssl-3 sr#303281 > Factory openssl-3 sr#1099215
Related submissions: * openssl: https://build.suse.de/request/show/303282 * openssl-1_1: https://build.suse.de/request/show/303283
Fix also submitted to Factory as no new version will be released for now, from the advisory in https://www.openssl.org/news/secadv/20230714.txt: > Due to the low severity of this issue we are not issuing new releases of > OpenSSL at this time. The fix will be included in the next releases when they > become available...
SUSE-SU-2023:3013-1: An update that solves two vulnerabilities can now be installed. Category: security (moderate) Bug References: 1213383, 1213487 CVE References: CVE-2023-2975, CVE-2023-3446 Sources used: openSUSE Leap 15.4 (src): openssl-3-3.0.8-150400.4.31.2 Basesystem Module 15-SP4 (src): openssl-3-3.0.8-150400.4.31.2 NOTE: This line indicates an update has been released for the listed product(s). At times this might be only a partial fix. If you have questions please reach out to maintenance coordination.
SUSE-SU-2023:3011-1: An update that solves two vulnerabilities can now be installed. Category: security (moderate) Bug References: 1213383, 1213487 CVE References: CVE-2023-2975, CVE-2023-3446 Sources used: openSUSE Leap 15.5 (src): openssl-3-3.0.8-150500.5.8.1 Basesystem Module 15-SP5 (src): openssl-3-3.0.8-150500.5.8.1 NOTE: This line indicates an update has been released for the listed product(s). At times this might be only a partial fix. If you have questions please reach out to maintenance coordination.
All done, closing.