ALAS-2022-1564


Amazon Linux 1 Security Advisory: ALAS-2022-1564
Advisory Release Date: 2022-02-10 21:59 Pacific
Advisory Updated Date: 2022-02-18 22:48 Pacific
Severity: Critical

Issue Overview:

A flaw was found in the way samba implemented SMB1 authentication. An attacker could use this flaw to retrieve the plaintext password sent over the wire even if Kerberos authentication was required. (CVE-2016-2124)

A flaw was found in the way Samba maps domain users to local users. An authenticated attacker could use this flaw to cause possible privilege escalation. (CVE-2020-25717)

A flaw was found in samba. The Samba smbd file server must map Windows group identities (SIDs) into unix group ids (gids). The code that performs this had a flaw that could allow it to read data beyond the end of the array in the case where a negative cache entry had been added to the mapping cache. This could cause the calling code to return those values into the process token that stores the group membership for a user. The highest threat from this vulnerability is to data confidentiality and integrity. (CVE-2021-20254)

Out-of-bounds heap read/write vulnerability in VFS module vfs_fruit allows code execution (CVE-2021-44142)


Affected Packages:

samba


Issue Correction:
Run yum update samba to update your system.

New Packages:
i686:
    ctdb-tests-4.10.16-18.59.amzn1.i686
    libwbclient-4.10.16-18.59.amzn1.i686
    samba-python-4.10.16-18.59.amzn1.i686
    ctdb-4.10.16-18.59.amzn1.i686
    samba-client-libs-4.10.16-18.59.amzn1.i686
    samba-common-libs-4.10.16-18.59.amzn1.i686
    samba-winbind-clients-4.10.16-18.59.amzn1.i686
    libwbclient-devel-4.10.16-18.59.amzn1.i686
    samba-devel-4.10.16-18.59.amzn1.i686
    libsmbclient-devel-4.10.16-18.59.amzn1.i686
    samba-test-libs-4.10.16-18.59.amzn1.i686
    samba-test-4.10.16-18.59.amzn1.i686
    samba-debuginfo-4.10.16-18.59.amzn1.i686
    samba-4.10.16-18.59.amzn1.i686
    samba-winbind-modules-4.10.16-18.59.amzn1.i686
    samba-winbind-krb5-locator-4.10.16-18.59.amzn1.i686
    libsmbclient-4.10.16-18.59.amzn1.i686
    samba-winbind-4.10.16-18.59.amzn1.i686
    samba-common-tools-4.10.16-18.59.amzn1.i686
    samba-libs-4.10.16-18.59.amzn1.i686
    samba-krb5-printing-4.10.16-18.59.amzn1.i686
    samba-client-4.10.16-18.59.amzn1.i686
    samba-python-test-4.10.16-18.59.amzn1.i686

noarch:
    samba-pidl-4.10.16-18.59.amzn1.noarch
    samba-common-4.10.16-18.59.amzn1.noarch

src:
    samba-4.10.16-18.59.amzn1.src

x86_64:
    samba-4.10.16-18.59.amzn1.x86_64
    samba-winbind-clients-4.10.16-18.59.amzn1.x86_64
    libsmbclient-4.10.16-18.59.amzn1.x86_64
    libwbclient-devel-4.10.16-18.59.amzn1.x86_64
    libsmbclient-devel-4.10.16-18.59.amzn1.x86_64
    samba-winbind-4.10.16-18.59.amzn1.x86_64
    samba-test-libs-4.10.16-18.59.amzn1.x86_64
    samba-winbind-krb5-locator-4.10.16-18.59.amzn1.x86_64
    samba-python-test-4.10.16-18.59.amzn1.x86_64
    samba-debuginfo-4.10.16-18.59.amzn1.x86_64
    libwbclient-4.10.16-18.59.amzn1.x86_64
    ctdb-4.10.16-18.59.amzn1.x86_64
    samba-client-4.10.16-18.59.amzn1.x86_64
    samba-devel-4.10.16-18.59.amzn1.x86_64
    samba-test-4.10.16-18.59.amzn1.x86_64
    samba-krb5-printing-4.10.16-18.59.amzn1.x86_64
    samba-client-libs-4.10.16-18.59.amzn1.x86_64
    samba-libs-4.10.16-18.59.amzn1.x86_64
    samba-winbind-modules-4.10.16-18.59.amzn1.x86_64
    samba-python-4.10.16-18.59.amzn1.x86_64
    samba-common-libs-4.10.16-18.59.amzn1.x86_64
    ctdb-tests-4.10.16-18.59.amzn1.x86_64
    samba-common-tools-4.10.16-18.59.amzn1.x86_64