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Sicherheit: Mehrere Probleme in libssh2
Aktuelle Meldungen Distributionen
Name: Mehrere Probleme in libssh2
ID: FEDORA-2019-70a9d4f970
Distribution: Fedora
Plattformen: Fedora 30
Datum: Fr, 5. April 2019, 07:44
Referenzen: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-3862
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-3860
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-3855
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-3861
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-3863
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-3857
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-3858
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-3856
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-3859
Applikationen: libssh2

Originalnachricht

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Fedora Update Notification
FEDORA-2019-70a9d4f970
2019-04-05 00:00:52.421110
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Name : libssh2
Product : Fedora 30
Version : 1.8.2
Release : 1.fc30
URL : http://www.libssh2.org/
Summary : A library implementing the SSH2 protocol
Description :
libssh2 is a library implementing the SSH2 protocol as defined by
Internet Drafts: SECSH-TRANS(22), SECSH-USERAUTH(25),
SECSH-CONNECTION(23), SECSH-ARCH(20), SECSH-FILEXFER(06)*,
SECSH-DHGEX(04), and SECSH-NUMBERS(10).

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Update Information:

This update addresses various overflow conditions that could result in possible
memory read/write out of bounds errors or zero byte allocations when connected
to a malicious server.
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References:

[ 1 ] Bug #1687313 - CVE-2019-3863 libssh2: Integer overflow in user
authenticate keyboard interactive allows out-of-bounds writes
https://bugzilla.redhat.com/show_bug.cgi?id=1687313
[ 2 ] Bug #1687312 - CVE-2019-3862 libssh2: Out-of-bounds memory comparison
with specially crafted message channel request
https://bugzilla.redhat.com/show_bug.cgi?id=1687312
[ 3 ] Bug #1687311 - CVE-2019-3861 libssh2: Out-of-bounds reads with
specially crafted SSH packets
https://bugzilla.redhat.com/show_bug.cgi?id=1687311
[ 4 ] Bug #1687310 - CVE-2019-3860 libssh2: Out-of-bounds reads with
specially crafted SFTP packets
https://bugzilla.redhat.com/show_bug.cgi?id=1687310
[ 5 ] Bug #1687307 - CVE-2019-3859 libssh2: Unchecked use of
_libssh2_packet_require and _libssh2_packet_requirev resulting in out-of-bounds read
https://bugzilla.redhat.com/show_bug.cgi?id=1687307
[ 6 ] Bug #1687306 - CVE-2019-3858 libssh2: Zero-byte allocation with a
specially crafted SFTP packed leading to an out-of-bounds read
https://bugzilla.redhat.com/show_bug.cgi?id=1687306
[ 7 ] Bug #1687305 - CVE-2019-3857 libssh2: Integer overflow in SSH packet
processing channel resulting in out of bounds write
https://bugzilla.redhat.com/show_bug.cgi?id=1687305
[ 8 ] Bug #1687304 - CVE-2019-3856 libssh2: Integer overflow in keyboard
interactive handling resulting in out of bounds write
https://bugzilla.redhat.com/show_bug.cgi?id=1687304
[ 9 ] Bug #1687303 - CVE-2019-3855 libssh2: Integer overflow in transport
read resulting in out of bounds write
https://bugzilla.redhat.com/show_bug.cgi?id=1687303
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This update can be installed with the "dnf" update program. Use
su -c 'dnf upgrade --advisory FEDORA-2019-70a9d4f970' at the command
line. For more information, refer to the dnf documentation available at
http://dnf.readthedocs.io/en/latest/command_ref.html#upgrade-command-label

All packages are signed with the Fedora Project GPG key. More details on the
GPG keys used by the Fedora Project can be found at
https://fedoraproject.org/keys
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