Bug 760702 (CVE-2020-25658) – <dev-python/rsa-4.7: timing attack vulnerability (CVE-2020-25658)

• Product: Gentoo Security
• Status: IN_PROGRESS ---

[Description John Helmert III 2020-12-19 08:12:33 UTC]

CVE-2020-25658:

It was found that python-rsa is vulnerable to Bleichenbacher timing attacks. An attacker can use this flaw via the RSA decryption API to decrypt parts of the cipher text encrypted with RSA.


Upstream issue at $URL. Issue was closed by a patch, but it seems there's some uncertainty about whether the patch adequately addresses the security issue.

[Comment 1 Sam James 2021-01-10 12:39:19 UTC]

4.7 is now out with a proper fix, it seems

[Comment 2 Michał Górny 2021-01-10 19:01:10 UTC]

I'm going to push it shortly, just want to test all revdeps.

[addCollapseLink(3, 1, 'Toggle comment display'); Comment 3 NATTkA bot 2021-01-10 19:04:55 UTC Comment hidden (obsolete)]

Unable to check for sanity:

> no match for package: dev-python/rsa-4.7

[addCollapseLink(4, 1, 'Toggle comment display'); Comment 4 NATTkA bot 2021-01-10 19:21:00 UTC Comment hidden (obsolete)]

All sanity-check issues have been resolved

[Comment 5 Sam James 2021-01-11 19:13:16 UTC]

arm64 done

[Comment 6 Sam James 2021-01-11 19:13:54 UTC]

arm done

[Comment 7 Sam James 2021-01-11 22:19:59 UTC]

amd64 ppc sparc x86 (ALLARCHES) done

all arches done

[Comment 8 Sam James 2021-01-11 22:33:29 UTC]

Please cleanup, thanks!

[Comment 9 Larry the Git Cow 2021-01-11 22:48:46 UTC]

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

https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=4a0a76ae11cccd6046a21ea096d5ead335955603

commit 4a0a76ae11cccd6046a21ea096d5ead335955603
Author:     Michał Górny <[e-mail]>
AuthorDate: 2021-01-11 22:48:09 +0000
Commit:     Michał Górny <[e-mail]>
CommitDate: 2021-01-11 22:48:12 +0000

    dev-python/rsa: Remove old
    
    Bug: https://bugs.gentoo.org/760702
    Signed-off-by: Michał Górny <[e-mail]>

 dev-python/rsa/Manifest       |  1 -
 dev-python/rsa/rsa-4.2.ebuild | 35 -----------------------------------
 2 files changed, 36 deletions(-)

[addCollapseLink(10, 1, 'Toggle comment display'); Comment 10 NATTkA bot 2021-03-19 21:41:01 UTC Comment hidden (obsolete)]

Unable to check for sanity:

> no match for package: dev-python/rsa-4.7

[addCollapseLink(11, 1, 'Toggle comment display'); Comment 11 NATTkA bot 2021-07-29 17:24:59 UTC Comment hidden (obsolete)]

Package list is empty or all packages have requested keywords.

[addCollapseLink(12, 1, 'Toggle comment display'); Comment 12 NATTkA bot 2021-07-29 17:33:32 UTC Comment hidden (obsolete)]

Package list is empty or all packages have requested keywords.

[addCollapseLink(13, 1, 'Toggle comment display'); Comment 13 NATTkA bot 2021-07-29 17:41:25 UTC Comment hidden (obsolete)]

Package list is empty or all packages have requested keywords.

[addCollapseLink(14, 1, 'Toggle comment display'); Comment 14 NATTkA bot 2021-07-29 17:49:33 UTC Comment hidden (obsolete)]

Package list is empty or all packages have requested keywords.

[addCollapseLink(15, 1, 'Toggle comment display'); Comment 15 NATTkA bot 2021-07-29 18:05:28 UTC Comment hidden (obsolete)]

Package list is empty or all packages have requested keywords.

[Comment 16 NATTkA bot 2021-07-29 18:13:46 UTC]

Package list is empty or all packages have requested keywords.