Bug 702176 (CVE-2019-1551) – <dev-libs/openssl-1.0.2u: rsaz_512_sqr overflow bug on x86_64 (CVE-2019-1551)

• Product: Gentoo Security
• Status: RESOLVED FIXED

[Description GLSAMaker/CVETool Bot 2019-12-06 16:54:22 UTC]

CVE-2019-1551 (https://nvd.nist.gov/vuln/detail/CVE-2019-1551):
  There is an overflow bug in the x64_64 Montgomery squaring procedure used in
  exponentiation with 512-bit moduli. No EC algorithms are affected. Analysis
  suggests that attacks against 2-prime RSA1024, 3-prime RSA1536, and DSA1024
  as a result of this defect would be very difficult to perform and are not
  believed likely. Attacks against DH512 are considered just feasible.
  However, for an attack the target would have to re-use the DH512 private
  key, which is not recommended anyway. Also applications directly using the
  low level API BN_mod_exp may be affected if they use BN_FLG_CONSTTIME.

[Comment 1 Larry the Git Cow 2019-12-21 20:30:59 UTC]

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

https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=c2b642ed1dfc7cb054380769761024dd73a768c6

commit c2b642ed1dfc7cb054380769761024dd73a768c6
Author:     Thomas Deutschmann <[e-mail]>
AuthorDate: 2019-12-21 20:30:14 +0000
Commit:     Thomas Deutschmann <[e-mail]>
CommitDate: 2019-12-21 20:30:27 +0000

    dev-libs/openssl-compat: bump to v1.0.2u
    
    Bug: https://bugs.gentoo.org/702176
    Package-Manager: Portage-2.3.82, Repoman-2.3.20
    Signed-off-by: Thomas Deutschmann <[e-mail]>

 dev-libs/openssl-compat/Manifest                   |   1 +
 .../openssl-compat/openssl-compat-1.0.2u.ebuild    | 246 +++++++++++++++++++++
 2 files changed, 247 insertions(+)

https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=4ee264fd167eddcdc37f667af5b667a94ceaee8c

commit 4ee264fd167eddcdc37f667af5b667a94ceaee8c
Author:     Thomas Deutschmann <[e-mail]>
AuthorDate: 2019-12-21 20:28:27 +0000
Commit:     Thomas Deutschmann <[e-mail]>
CommitDate: 2019-12-21 20:30:26 +0000

    dev-libs/openssl: bump to v1.0.2u
    
    Bug: https://bugs.gentoo.org/702176
    Package-Manager: Portage-2.3.82, Repoman-2.3.20
    Signed-off-by: Thomas Deutschmann <[e-mail]>

 dev-libs/openssl/Manifest              |   1 +
 dev-libs/openssl/openssl-1.0.2u.ebuild | 308 +++++++++++++++++++++++++++++++++
 2 files changed, 309 insertions(+)

[Comment 2 Larry the Git Cow 2020-01-01 21:25:33 UTC]

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

https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=273422f6cae129a4a97402641e81b13db9461ec4

commit 273422f6cae129a4a97402641e81b13db9461ec4
Author:     Thomas Deutschmann <[e-mail]>
AuthorDate: 2020-01-01 21:24:50 +0000
Commit:     Thomas Deutschmann <[e-mail]>
CommitDate: 2020-01-01 21:25:12 +0000

    dev-libs/openssl-compat: security cleanup (#702176)
    
    Bug: https://bugs.gentoo.org/702176
    Package-Manager: Portage-2.3.84, Repoman-2.3.20
    Signed-off-by: Thomas Deutschmann <[e-mail]>

 dev-libs/openssl-compat/Manifest                   |   1 -
 .../openssl-compat/openssl-compat-1.0.2t-r1.ebuild | 246 ---------------------
 2 files changed, 247 deletions(-)

https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=617d66b7f218311a247c1b8783d866e2d6325eac

commit 617d66b7f218311a247c1b8783d866e2d6325eac
Author:     Thomas Deutschmann <[e-mail]>
AuthorDate: 2020-01-01 21:23:57 +0000
Commit:     Thomas Deutschmann <[e-mail]>
CommitDate: 2020-01-01 21:25:10 +0000

    dev-libs/openssl-compat: move stable keywords
    
    Bug: https://bugs.gentoo.org/702176
    Package-Manager: Portage-2.3.84, Repoman-2.3.20
    Signed-off-by: Thomas Deutschmann <[e-mail]>

 dev-libs/openssl-compat/openssl-compat-1.0.2u.ebuild | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=2fd3637f1b9e3cee6adf6b7c10d1ecc4ea08071e

commit 2fd3637f1b9e3cee6adf6b7c10d1ecc4ea08071e
Author:     Thomas Deutschmann <[e-mail]>
AuthorDate: 2020-01-01 21:22:39 +0000
Commit:     Thomas Deutschmann <[e-mail]>
CommitDate: 2020-01-01 21:25:09 +0000

    dev-libs/openssl: security cleanup (#702176)
    
    Bug: https://bugs.gentoo.org/702176
    Package-Manager: Portage-2.3.84, Repoman-2.3.20
    Signed-off-by: Thomas Deutschmann <[e-mail]>

 dev-libs/openssl/Manifest                 |   1 -
 dev-libs/openssl/openssl-1.0.2t-r1.ebuild | 308 ------------------------------
 2 files changed, 309 deletions(-)

https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=5d84fb00a536f5754b7ca8d253fb43c19e2a066d

commit 5d84fb00a536f5754b7ca8d253fb43c19e2a066d
Author:     Thomas Deutschmann <[e-mail]>
AuthorDate: 2020-01-01 21:21:43 +0000
Commit:     Thomas Deutschmann <[e-mail]>
CommitDate: 2020-01-01 21:25:08 +0000

    dev-libs/openssl: move stable keywords
    
    Bug: https://bugs.gentoo.org/702176
    Package-Manager: Portage-2.3.84, Repoman-2.3.20
    Signed-off-by: Thomas Deutschmann <[e-mail]>

 dev-libs/openssl/openssl-1.0.2u.ebuild | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

[Comment 3 Thomas Deutschmann (RETIRED) 2020-04-23 14:18:06 UTC]

Added to an existing GLSA request.

[Comment 4 GLSAMaker/CVETool Bot 2020-04-23 14:21:58 UTC]

This issue was resolved and addressed in
 GLSA 202004-10 at https://security.gentoo.org/glsa/202004-10
by GLSA coordinator Thomas Deutschmann (whissi).