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Bug 727604 (CVE-2020-13962) - <dev-qt/qtnetwork-5.14.2-r1: Incorrectly calls SSL_shutdown() (OpenSSL) causing denial of service (CVE-2020-13962)
Summary: <dev-qt/qtnetwork-5.14.2-r1: Incorrectly calls SSL_shutdown() (OpenSSL) causi...
Alias: CVE-2020-13962
Product: Gentoo Security
Classification: Unclassified
Component: Vulnerabilities (show other bugs)
Hardware: All Linux
: Normal normal (vote)
Assignee: Gentoo Security
Whiteboard: A3 [glsa+ cve]
Depends on:
Reported: 2020-06-09 00:50 UTC by Sam James
Modified: 2020-07-27 00:01 UTC (History)
1 user (show)

See Also:
Package list:
dev-qt/qtnetwork-5.14.2-r1 dev-qt/qtmultimedia-5.14.2-r1 dev-qt/qtdeclarative-5.14.2-r3 dev-qt/qtquickcontrols2-5.14.2-r1 amd64 arm64 x86
Runtime testing required: ---
nattka: sanity-check+


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Description Sam James archtester Gentoo Infrastructure gentoo-dev Security 2020-06-09 00:50:29 UTC
"Qt 5.12.2 through 5.14.2, as used in unofficial builds of Mumble 1.3.0 and other products, mishandles OpenSSL's error queue, which can cause a denial of service to QSslSocket users. Because errors leak in unrelated TLS sessions, an unrelated session may be disconnected when any handshake fails. (Mumble 1.3.1 is not affected, regardless of the Qt version.)"
Comment 1 Sam James archtester Gentoo Infrastructure gentoo-dev Security 2020-06-09 00:51:06 UTC
Patch for 5.14.x:
Comment 2 Larry the Git Cow gentoo-dev 2020-06-10 17:53:15 UTC
The bug has been closed via the following commit(s):

commit 8ededff26ca832ef16f40e986c3cf85062de3428
Author:     Andreas Sturmlechner <>
AuthorDate: 2020-06-09 19:05:03 +0000
Commit:     Andreas Sturmlechner <>
CommitDate: 2020-06-10 17:52:29 +0000

    dev-qt/qtnetwork: Fix CVE-2020-13962
    Tested-by: Sam James (sam_c) <
    Package-Manager: Portage-2.3.100, Repoman-2.3.22
    Signed-off-by: Andreas Sturmlechner <>

 .../files/qtnetwork-5.14.2-CVE-2020-13962.patch    | 172 +++++++++++++++++++++
 dev-qt/qtnetwork/qtnetwork-5.14.2-r1.ebuild        |  66 ++++++++
 2 files changed, 238 insertions(+)
Comment 3 Sam James archtester Gentoo Infrastructure gentoo-dev Security 2020-06-10 17:55:24 UTC
@maintainer(s), let us know when ready for stabling!
Comment 4 Sam James archtester Gentoo Infrastructure gentoo-dev Security 2020-06-17 14:27:12 UTC
arm64 stable
Comment 5 Thomas Deutschmann (RETIRED) gentoo-dev 2020-06-20 13:50:57 UTC
x86 stable
Comment 6 Agostino Sarubbo gentoo-dev 2020-06-21 16:55:03 UTC
amd64 stable
Comment 7 Agostino Sarubbo gentoo-dev 2020-06-21 17:00:32 UTC
arm stable
Comment 8 Agostino Sarubbo gentoo-dev 2020-06-21 17:06:10 UTC
ppc stable
Comment 9 Agostino Sarubbo gentoo-dev 2020-06-21 17:09:16 UTC
ppc64 stable.

Maintainer(s), please cleanup.
Security, please add it to the existing request, or file a new one.
Comment 10 Larry the Git Cow gentoo-dev 2020-06-21 22:25:33 UTC
The bug has been referenced in the following commit(s):

commit 50f156c75fa341b22c322a9eedefcf60cfb1daa3
Author:     Andreas Sturmlechner <>
AuthorDate: 2020-06-21 22:23:11 +0000
Commit:     Andreas Sturmlechner <>
CommitDate: 2020-06-21 22:23:11 +0000

    dev-qt/qtnetwork: Drop vulnerable 5.14.2 (r0)
    Package-Manager: Portage-2.3.101, Repoman-2.3.22
    Signed-off-by: Andreas Sturmlechner <>

 dev-qt/qtnetwork/qtnetwork-5.14.2.ebuild | 62 --------------------------------
 1 file changed, 62 deletions(-)
Comment 11 GLSAMaker/CVETool Bot gentoo-dev 2020-07-27 00:01:05 UTC
This issue was resolved and addressed in
 GLSA 202007-18 at
by GLSA coordinator Sam James (sam_c).