5.9 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
4.3 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:N/AC:M/Au:N/C:P/I:N/A:N
0.008 Low
EPSS
Percentile
81.5%
Package : openssl
Version : 1.0.1t-1+deb8u11
CVE ID : CVE-2019-1559
Juraj Somorovsky, Robert Merget and Nimrod Aviram discovered a padding
oracle attack in OpenSSL.
If an application encounters a fatal protocol error and then calls
SSL_shutdown() twice (once to send a close_notify, and once to receive
one) then OpenSSL can respond differently to the calling application
if a 0 byte record is received with invalid padding compared to if a 0
byte record is received with an invalid MAC. If the application then
behaves differently based on that in a way that is detectable to the
remote peer, then this amounts to a padding oracle that could be used
to decrypt data.
In order for this to be exploitable "non-stitched" ciphersuites must
be in use. Stitched ciphersuites are optimised implementations of
certain commonly used ciphersuites. Also the application must call
SSL_shutdown() twice even if a protocol error has occurred
(applications should not do this but some do anyway).
AEAD ciphersuites are not impacted.
For Debian 8 "Jessie", this problem has been fixed in version
1.0.1t-1+deb8u11.
We recommend that you upgrade your openssl packages.
Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
Debian | 8 | armel | openssl | < 1.0.1t-1+deb8u11 | openssl_1.0.1t-1+deb8u11_armel.deb |
Debian | 8 | armhf | libssl1.0.0-dbg | < 1.0.1t-1+deb8u11 | libssl1.0.0-dbg_1.0.1t-1+deb8u11_armhf.deb |
Debian | 9 | mips | libssl1.0-dev | < 1.0.2r-1~deb9u1 | libssl1.0-dev_1.0.2r-1~deb9u1_mips.deb |
Debian | 8 | armhf | libssl1.0.0 | < 1.0.1t-1+deb8u11 | libssl1.0.0_1.0.1t-1+deb8u11_armhf.deb |
Debian | 9 | mips64el | libssl1.0.2-dbgsym | < 1.0.2r-1~deb9u1 | libssl1.0.2-dbgsym_1.0.2r-1~deb9u1_mips64el.deb |
Debian | 9 | armhf | libssl1.0.2-dbgsym | < 1.0.2r-1~deb9u1 | libssl1.0.2-dbgsym_1.0.2r-1~deb9u1_armhf.deb |
Debian | 9 | mips | libssl1.0.2 | < 1.0.2r-1~deb9u1 | libssl1.0.2_1.0.2r-1~deb9u1_mips.deb |
Debian | 9 | mipsel | libssl1.0.2-dbgsym | < 1.0.2r-1~deb9u1 | libssl1.0.2-dbgsym_1.0.2r-1~deb9u1_mipsel.deb |
Debian | 9 | amd64 | libssl1.0.2-dbgsym | < 1.0.2r-1~deb9u1 | libssl1.0.2-dbgsym_1.0.2r-1~deb9u1_amd64.deb |
Debian | 9 | mips | libssl1.0.2-udeb | < 1.0.2r-1~deb9u1 | libssl1.0.2-udeb_1.0.2r-1~deb9u1_mips.deb |
5.9 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
4.3 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:N/AC:M/Au:N/C:P/I:N/A:N
0.008 Low
EPSS
Percentile
81.5%