** Description changed: === SRU information === [Meta] This bug is part of a series of four bugs for a single SRU. This ( #2033422 ) is the "central" bug with the global information and debdiff. This SRU addresses four issues with Jammy's openssl version: - http://pad.lv/1990216: Blowfish OFB/CFB decryption - http://pad.lv/1994165: ignored SMIME signature errors - http://pad.lv/2023545: imbca engine dumps core - http://pad.lv/2033422: very high CPU usage for concurrent TLS connections The SRU information has been added to the four bug reports and I am attaching the debdiff here only for all four. All the patches have been included in subsequent openssl 3.0.x releases which in turn have been included in subsequent Ubuntu releases. There has been no report of issues when updating to these Ubuntu releases. I have rebuilt the openssl versions and used abi-compliance-checker to compare the ABIs of the libraries in jammy and the one for the SRU. Both matched completely (FYI, mantic's matched completely too). The patch related to blowfish presents an annoying situation: jammy's openssl creates incompatible files and cannot read other files but fixing it will lead to files created on jammy so far to become unreadable. Fortunately, blowfish is long-deprecated and applications can be improved to handle this situation if the need arises in practice. This is stated in the SRU information in the bug and in d/changelog. The current situation in Jammy could be a security issue but due to the aforementioned deprecation, the low usage of blowfish and the fact that upstream didn't consider this worthy of a security notice, we (this includes the security team) chose not to pursue that path either. I have also pushed the code to git (without any attempt to make it git- ubuntu friendly). https://code.launchpad.net/~adrien-n/ubuntu/+source/openssl/+git/openssl/+ref/jammy- sru [Impact] Severely degraded performance for concurrent operations compared to openssl 1.1. The performance is so degraded that some workloads fail due to timeouts or insufficient resources (noone magically has 5 times more machines). As a consequence, a number of people use openssl 1.1 instead and do not get security updates. [Test plan] Rafael Lopez has shared a simple benchmarks in http://pad.lv/2009544 with https://bugs.launchpad.net/ubuntu/+source/openssl/+bug/2009544/+attachment/5690224/+files/main.py . Using this, I get the following numbers on my laptop: 3.0.2: real 2m5.567s user 4m3.948s sys 2m0.233s this SRU: real 0m23.966s user 2m35.687s sys 0m1.920s As can be easily seen, the speed-up is massive: system time is divided by 60 and overall wall clock time is roughly five times lower. [Where problems could occur] The change is spread over several patches which touch the internals of openssl. As such, the engine and provider functionality could be broken by these changes. Fortunately, in addition to upstream's code review, these patches are included in openssl 3.0.4 (iirc) and therefore in kinetic. No issue related to these changes was reported on launchpad or upstream. + However, it is possible that there were more patch dependencies than + these in either 3.0.3 or 3.0.4. In that case there could be problems. + [Patches] The patches come directly from upstream and apply cleanly. https://github.com/openssl/openssl/pull/18151#issuecomment-1118535602 * https://git.launchpad.net/~adrien-n/ubuntu/+source/openssl/tree/debian/patches/jammy-sru-0001-Drop-ossl_provider_clear_all_operation_bits-and-all-.patch?h=jammy-sru&id=04ef023920ab08fba214817523fba897527dfff0 * https://git.launchpad.net/~adrien-n/ubuntu/+source/openssl/tree/debian/patches/jammy-sru-0002-Refactor-method-construction-pre-and-post-condition.patch?h=jammy-sru&id=04ef023920ab08fba214817523fba897527dfff0 * https://git.launchpad.net/~adrien-n/ubuntu/+source/openssl/tree/debian/patches/jammy-sru-0003-Don-t-empty-the-method-store-when-flushing-the-query.patch?h=jammy-sru&id=04ef023920ab08fba214817523fba897527dfff0 * https://git.launchpad.net/~adrien-n/ubuntu/+source/openssl/tree/debian/patches/jammy-sru-0004-Make-it-possible-to-remove-methods-by-the-provider-t.patch?h=jammy-sru&id=04ef023920ab08fba214817523fba897527dfff0 * https://git.launchpad.net/~adrien-n/ubuntu/+source/openssl/tree/debian/patches/jammy-sru-0005-Complete-the-cleanup-of-an-algorithm-in-OSSL_METHOD_.patch?h=jammy-sru&id=04ef023920ab08fba214817523fba897527dfff0 * https://git.launchpad.net/~adrien-n/ubuntu/+source/openssl/tree/debian/patches/jammy-sru-0006-For-child-libctx-provider-don-t-count-self-reference.patch?h=jammy-sru&id=04ef023920ab08fba214817523fba897527dfff0 * https://git.launchpad.net/~adrien-n/ubuntu/+source/openssl/tree/debian/patches/jammy-sru-0007-Add-method-store-cache-flush-and-method-removal-to-n.patch?h=jammy-sru&id=04ef023920ab08fba214817523fba897527dfff0 === Original description === This is about SRU'ing to Jammy the patches at https://github.com/openssl/openssl/pull/18151#issuecomment-1118535602 . They're purely performance but their impact is large. They have been released as part of openssl 3.0.4 (they're among the first after 3.0.3) which has been included in Kinetic.
-- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to openssl in Ubuntu. https://bugs.launchpad.net/bugs/2033422 Title: openssl: backport to jammy "clear method store / query cache confusion" Status in openssl package in Ubuntu: New Status in openssl source package in Jammy: In Progress Status in openssl source package in Lunar: Fix Released Bug description: === SRU information === [Meta] This bug is part of a series of four bugs for a single SRU. This ( #2033422 ) is the "central" bug with the global information and debdiff. This SRU addresses four issues with Jammy's openssl version: - http://pad.lv/1990216: Blowfish OFB/CFB decryption - http://pad.lv/1994165: ignored SMIME signature errors - http://pad.lv/2023545: imbca engine dumps core - http://pad.lv/2033422: very high CPU usage for concurrent TLS connections The SRU information has been added to the four bug reports and I am attaching the debdiff here only for all four. All the patches have been included in subsequent openssl 3.0.x releases which in turn have been included in subsequent Ubuntu releases. There has been no report of issues when updating to these Ubuntu releases. I have rebuilt the openssl versions and used abi-compliance-checker to compare the ABIs of the libraries in jammy and the one for the SRU. Both matched completely (FYI, mantic's matched completely too). The patch related to blowfish presents an annoying situation: jammy's openssl creates incompatible files and cannot read other files but fixing it will lead to files created on jammy so far to become unreadable. Fortunately, blowfish is long-deprecated and applications can be improved to handle this situation if the need arises in practice. This is stated in the SRU information in the bug and in d/changelog. The current situation in Jammy could be a security issue but due to the aforementioned deprecation, the low usage of blowfish and the fact that upstream didn't consider this worthy of a security notice, we (this includes the security team) chose not to pursue that path either. I have also pushed the code to git (without any attempt to make it git-ubuntu friendly). https://code.launchpad.net/~adrien-n/ubuntu/+source/openssl/+git/openssl/+ref/jammy- sru [Impact] Severely degraded performance for concurrent operations compared to openssl 1.1. The performance is so degraded that some workloads fail due to timeouts or insufficient resources (noone magically has 5 times more machines). As a consequence, a number of people use openssl 1.1 instead and do not get security updates. [Test plan] Rafael Lopez has shared a simple benchmarks in http://pad.lv/2009544 with https://bugs.launchpad.net/ubuntu/+source/openssl/+bug/2009544/+attachment/5690224/+files/main.py . Using this, I get the following numbers on my laptop: 3.0.2: real 2m5.567s user 4m3.948s sys 2m0.233s this SRU: real 0m23.966s user 2m35.687s sys 0m1.920s As can be easily seen, the speed-up is massive: system time is divided by 60 and overall wall clock time is roughly five times lower. [Where problems could occur] The change is spread over several patches which touch the internals of openssl. As such, the engine and provider functionality could be broken by these changes. Fortunately, in addition to upstream's code review, these patches are included in openssl 3.0.4 (iirc) and therefore in kinetic. No issue related to these changes was reported on launchpad or upstream. However, it is possible that there were more patch dependencies than these in either 3.0.3 or 3.0.4. In that case there could be problems. [Patches] The patches come directly from upstream and apply cleanly. https://github.com/openssl/openssl/pull/18151#issuecomment-1118535602 * https://git.launchpad.net/~adrien-n/ubuntu/+source/openssl/tree/debian/patches/jammy-sru-0001-Drop-ossl_provider_clear_all_operation_bits-and-all-.patch?h=jammy-sru&id=04ef023920ab08fba214817523fba897527dfff0 * https://git.launchpad.net/~adrien-n/ubuntu/+source/openssl/tree/debian/patches/jammy-sru-0002-Refactor-method-construction-pre-and-post-condition.patch?h=jammy-sru&id=04ef023920ab08fba214817523fba897527dfff0 * https://git.launchpad.net/~adrien-n/ubuntu/+source/openssl/tree/debian/patches/jammy-sru-0003-Don-t-empty-the-method-store-when-flushing-the-query.patch?h=jammy-sru&id=04ef023920ab08fba214817523fba897527dfff0 * https://git.launchpad.net/~adrien-n/ubuntu/+source/openssl/tree/debian/patches/jammy-sru-0004-Make-it-possible-to-remove-methods-by-the-provider-t.patch?h=jammy-sru&id=04ef023920ab08fba214817523fba897527dfff0 * https://git.launchpad.net/~adrien-n/ubuntu/+source/openssl/tree/debian/patches/jammy-sru-0005-Complete-the-cleanup-of-an-algorithm-in-OSSL_METHOD_.patch?h=jammy-sru&id=04ef023920ab08fba214817523fba897527dfff0 * https://git.launchpad.net/~adrien-n/ubuntu/+source/openssl/tree/debian/patches/jammy-sru-0006-For-child-libctx-provider-don-t-count-self-reference.patch?h=jammy-sru&id=04ef023920ab08fba214817523fba897527dfff0 * https://git.launchpad.net/~adrien-n/ubuntu/+source/openssl/tree/debian/patches/jammy-sru-0007-Add-method-store-cache-flush-and-method-removal-to-n.patch?h=jammy-sru&id=04ef023920ab08fba214817523fba897527dfff0 === Original description === This is about SRU'ing to Jammy the patches at https://github.com/openssl/openssl/pull/18151#issuecomment-1118535602 . They're purely performance but their impact is large. They have been released as part of openssl 3.0.4 (they're among the first after 3.0.3) which has been included in Kinetic. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/openssl/+bug/2033422/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
