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Debian LTS: Security Advisory for nss (DLA-2388-1)

Information

Severity

Severity

Medium

Family

Family

Debian Local Security Checks

CVSSv2 Base

CVSSv2 Base

6.8

CVSSv2 Vector

CVSSv2 Vector

AV:N/AC:M/Au:N/C:P/I:P/A:P

Solution Type

Solution Type

Vendor Patch

Created

Created

1 year ago

Modified

Modified

1 year ago

Summary

The remote host is missing an update for the 'nss' package(s) announced via the DLA-2388-1 advisory.

Insight

Insight

Various vulnerabilities were fixed in nss, the Network Security Service libraries. CVE-2018-12404 Cache side-channel variant of the Bleichenbacher attack. CVE-2018-18508 NULL pointer dereference in several CMS functions resulting in a denial of service. CVE-2019-11719 Out-of-bounds read when importing curve25519 private key. CVE-2019-11729 Empty or malformed p256-ECDH public keys may trigger a segmentation fault. CVE-2019-11745 Out-of-bounds write when encrypting with a block cipher. CVE-2019-17006 Some cryptographic primitives did not check the length of the input text, potentially resulting in overflows. CVE-2019-17007 Handling of Netscape Certificate Sequences may crash with a NULL dereference leading to a denial of service. CVE-2020-12399 Force a fixed length for DSA exponentiation. CVE-2020-6829 CVE-2020-12400 Side channel attack on ECDSA signature generation. CVE-2020-12401 ECDSA timing attack mitigation bypass. CVE-2020-12402 Side channel vulnerabilities during RSA key generation. CVE-2020-12403 CHACHA20-POLY1305 decryption with undersized tag leads to out-of-bounds read.

Affected Software

Affected Software

'nss' package(s) on Debian Linux.

Detection Method

Detection Method

Checks if a vulnerable package version is present on the target host.

Solution

Solution

For Debian 9 stretch, these problems have been fixed in version 2:3.26.2-1.1+deb9u2. We recommend that you upgrade your nss packages.