Bug 818841 (CVE-2021-41991) – <net-vpn/strongswan-5.9.4: integer overflow (CVE-2021-41991)

• Product: Gentoo Security
• Status: RESOLVED FIXED

[Description John Helmert III 2021-10-18 19:46:47 UTC]

CVE-2021-41991:

The in-memory certificate cache in strongSwan before 5.9.4 has a remote integer overflow upon receiving many requests with different certificates to fill the cache and later trigger the replacement of cache entries. The code attempts to select a less-often-used cache entry by means of a random number generator, but this is not done correctly. Remote code execution might be a slight possibility.

[Comment 1 Larry the Git Cow 2022-01-02 14:15:52 UTC]

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

https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=7b2be9c86d3a38312e787a30291c46e30b2da3bb

commit 7b2be9c86d3a38312e787a30291c46e30b2da3bb
Author:     Philipp Rösner <[e-mail]>
AuthorDate: 2021-12-29 22:46:06 +0000
Commit:     Florian Schmaus <[e-mail]>
CommitDate: 2022-01-02 14:15:30 +0000

    net-vpn/strongswan: bump to 5.9.4
    
    Added an ebuild for strongswan-5.9.4 with support for EAPI 8.
    
    Bug: https://bugs.gentoo.org/818841
    Package-Manager: Portage-3.0.30, Repoman-3.0.3
    Signed-off-by: Philipp Roesner <[e-mail]>
    Signed-off-by: Florian Schmaus <[e-mail]>

 net-vpn/strongswan/Manifest                |   1 +
 net-vpn/strongswan/strongswan-5.9.4.ebuild | 308 +++++++++++++++++++++++++++++
 2 files changed, 309 insertions(+)

[Comment 2 John Helmert III 2022-08-16 21:17:42 UTC]

I'm sorry I missed this, but thank you for the bump! Please cleanup remaining vulnerable ebuilds.

[Comment 3 Larry the Git Cow 2023-01-06 17:45:37 UTC]

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

https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=7387260e58f7f39705fa2c03024201eee834e8e9

commit 7387260e58f7f39705fa2c03024201eee834e8e9
Author:     John Helmert III <[e-mail]>
AuthorDate: 2023-01-06 17:43:24 +0000
Commit:     John Helmert III <[e-mail]>
CommitDate: 2023-01-06 17:43:34 +0000

    net-vpn/strongswan: drop 5.9.6-r1, 5.9.7
    
    Bug: https://bugs.gentoo.org/818841
    Bug: https://bugs.gentoo.org/832460
    Bug: https://bugs.gentoo.org/878887
    Signed-off-by: John Helmert III <[e-mail]>

 net-vpn/strongswan/Manifest                        |   2 -
 .../files/strongswan-5.9.6-werror-security.patch   |  20 --
 net-vpn/strongswan/strongswan-5.9.6-r1.ebuild      | 322 ---------------------
 net-vpn/strongswan/strongswan-5.9.7.ebuild         | 318 --------------------
 4 files changed, 662 deletions(-)

[Comment 4 Larry the Git Cow 2024-05-04 09:06:10 UTC]

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

https://gitweb.gentoo.org/data/glsa.git/commit/?id=5c311dfaab4c0172a4524ae5860106bcac33a694

commit 5c311dfaab4c0172a4524ae5860106bcac33a694
Author:     GLSAMaker <[e-mail]>
AuthorDate: 2024-05-04 09:05:41 +0000
Commit:     Hans de Graaff <[e-mail]>
CommitDate: 2024-05-04 09:06:06 +0000

    [ GLSA 202405-08 ] strongSwan: Multiple Vulnerabilities
    
    Bug: https://bugs.gentoo.org/818841
    Bug: https://bugs.gentoo.org/832460
    Bug: https://bugs.gentoo.org/878887
    Bug: https://bugs.gentoo.org/899964
    Signed-off-by: GLSAMaker <[e-mail]>
    Signed-off-by: Hans de Graaff <[e-mail]>

 glsa-202405-08.xml | 48 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 48 insertions(+)