Bug 832339 (CVE-2021-4160) – <dev-libs/openssl-{1.1.1m,3.0.1}: carry propagation bug on MIPS

• Product: Gentoo Security
• Status: RESOLVED FIXED

[Description John Helmert III 2022-01-29 18:03:06 UTC]

CVE-2021-4160:

There is a carry propagation bug in the MIPS32 and MIPS64 squaring procedure. Many EC algorithms are affected, including some of the TLS 1.3 default curves. Impact was not analyzed in detail, because the pre-requisites for attack are considered unlikely and include reusing private keys. Analysis suggests that attacks against RSA and DSA as a result of this defect would be very difficult to perform and are not believed likely. Attacks against DH are considered just feasible (although very difficult) because most of the work necessary to deduce information about a private key may be performed offline. The amount of resources required for such an attack would be significant. However, for an attack on TLS to be meaningful, the server would have to share the DH private key among multiple clients, which is no longer an option since CVE-2016-0701. This issue affects OpenSSL versions 1.0.2, 1.1.1 and 3.0.0. It was addressed in the releases of 1.1.1m and 3.0.1 on the 15th of December 2021. For the 1.0.2 release it is addressed in git commit 6fc1aaaf3 that is available to premium support customers only. It will be made available in 1.0.2zc when it is released. The issue only affects OpenSSL on MIPS platforms. Fixed in OpenSSL 3.0.1 (Affected 3.0.0). Fixed in OpenSSL 1.1.1m (Affected 1.1.1-1.1.1l). Fixed in OpenSSL 1.0.2zc-dev (Affected 1.0.2-1.0.2zb).

Fix in 1.1.1m, 3.0.1, so just waiting for cleanup here.

[Comment 1 Sam James 2022-04-17 17:16:36 UTC]

Cleanup done, pretty much, other than 1.0.x etc

[Comment 2 John Helmert III 2022-10-14 03:39:52 UTC]

We can throw this in with the others. GLSA request filed.

[Comment 3 Larry the Git Cow 2022-10-16 14:39:50 UTC]

The bug has been referenced in the following commit(s):

https://gitweb.gentoo.org/data/glsa.git/commit/?id=143e8d174e14e346f2c37e8a31a4be211ac3e24c

commit 143e8d174e14e346f2c37e8a31a4be211ac3e24c
Author:     GLSAMaker <[e-mail]>
AuthorDate: 2022-10-16 14:27:07 +0000
Commit:     John Helmert III <[e-mail]>
CommitDate: 2022-10-16 14:39:36 +0000

    [ GLSA 202210-02 ] OpenSSL: Multiple Vulnerabilities
    
    Bug: https://bugs.gentoo.org/741570
    Bug: https://bugs.gentoo.org/809980
    Bug: https://bugs.gentoo.org/832339
    Bug: https://bugs.gentoo.org/835343
    Bug: https://bugs.gentoo.org/842489
    Bug: https://bugs.gentoo.org/856592
    Bug: https://bugs.gentoo.org/876787
    Signed-off-by: GLSAMaker <[e-mail]>
    Signed-off-by: John Helmert III <[e-mail]>

 glsa-202210-02.xml | 56 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 56 insertions(+)

[Comment 4 Larry the Git Cow 2022-10-16 14:52:44 UTC]

The bug has been referenced in the following commit(s):

https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=530086715f82de12009538347725dbfd14e6b0a8

commit 530086715f82de12009538347725dbfd14e6b0a8
Author:     John Helmert III <[e-mail]>
AuthorDate: 2022-10-14 03:47:09 +0000
Commit:     John Helmert III <[e-mail]>
CommitDate: 2022-10-16 14:52:19 +0000

    profiles: mask <openssl-1.1.1
    
    Bug: https://bugs.gentoo.org/876787
    Bug: https://bugs.gentoo.org/741570
    Bug: https://bugs.gentoo.org/809980
    Bug: https://bugs.gentoo.org/832339
    Bug: https://bugs.gentoo.org/835343
    Bug: https://bugs.gentoo.org/842489
    Bug: https://bugs.gentoo.org/856592
    Closes: https://github.com/gentoo/gentoo/pull/22909
    Signed-off-by: John Helmert III <[e-mail]>

 profiles/package.mask | 5 +++++
 1 file changed, 5 insertions(+)

[Comment 5 John Helmert III 2022-10-16 14:53:57 UTC]

GLSA released, all done!