Amazon Linux 2 : glibc (ALAS-2018-1048)

High Nessus Plugin ID 111335

Synopsis

The remote Amazon Linux 2 host is missing a security update.

Description

stdlib/canonicalize.c in the GNU C Library (aka glibc or libc6) 2.27 and earlier, when processing very long pathname arguments to the realpath function, could encounter an integer overflow on 32-bit architectures, leading to a stack-based buffer overflow and, potentially, arbitrary code execution.(CVE-2018-11236)

The GNU C Library (aka glibc or libc6) before 2.27 contains an off-by-one error leading to a heap-based buffer overflow in the glob function in glob.c, related to the processing of home directories using the ~ operator followed by a long string. (CVE-2017-15670)

The glob function in glob.c in the GNU C Library (aka glibc or libc6) before 2.27 contains a buffer overflow during unescaping of user names with the ~ operator.(CVE-2017-15804)

An SSE2-optimized memmove implementation for i386 in sysdeps/i386/i686/multiarch/memcpy-sse2-unaligned.S in the GNU C Library (aka glibc or libc6) 2.21 through 2.27 does not correctly perform the overlapping memory check if the source memory range spans the middle of the address space, resulting in corrupt data being produced by the copy operation. This may disclose information to context-dependent attackers, or result in a denial of service, or, possibly, code execution.(CVE-2017-18269)

Solution

Run 'yum update glibc' to update your system.

See Also

https://alas.aws.amazon.com/AL2/ALAS-2018-1048.html

Plugin Details

Severity: High

ID: 111335

File Name: al2_ALAS-2018-1048.nasl

Version: 1.1

Type: local

Agent: unix

Published: 2018/07/26

Modified: 2018/07/26

Dependencies: 12634

Risk Information

Risk Factor: High

CVSS v2.0

Base Score: 7.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

CVSS v3.0

Base Score: 9.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Vulnerability Information

CPE: p-cpe:/a:amazon:linux:glibc, p-cpe:/a:amazon:linux:glibc-all-langpacks, p-cpe:/a:amazon:linux:glibc-benchtests, p-cpe:/a:amazon:linux:glibc-common, p-cpe:/a:amazon:linux:glibc-debuginfo, p-cpe:/a:amazon:linux:glibc-debuginfo-common, p-cpe:/a:amazon:linux:glibc-devel, p-cpe:/a:amazon:linux:glibc-headers, p-cpe:/a:amazon:linux:glibc-langpack-aa, p-cpe:/a:amazon:linux:glibc-langpack-af, p-cpe:/a:amazon:linux:glibc-langpack-ak, p-cpe:/a:amazon:linux:glibc-langpack-am, p-cpe:/a:amazon:linux:glibc-langpack-an, p-cpe:/a:amazon:linux:glibc-langpack-anp, p-cpe:/a:amazon:linux:glibc-langpack-ar, p-cpe:/a:amazon:linux:glibc-langpack-as, p-cpe:/a:amazon:linux:glibc-langpack-ast, p-cpe:/a:amazon:linux:glibc-langpack-ayc, p-cpe:/a:amazon:linux:glibc-langpack-az, p-cpe:/a:amazon:linux:glibc-langpack-be, p-cpe:/a:amazon:linux:glibc-langpack-bem, p-cpe:/a:amazon:linux:glibc-langpack-ber, p-cpe:/a:amazon:linux:glibc-langpack-bg, p-cpe:/a:amazon:linux:glibc-langpack-bhb, p-cpe:/a:amazon:linux:glibc-langpack-bho, p-cpe:/a:amazon:linux:glibc-langpack-bn, p-cpe:/a:amazon:linux:glibc-langpack-bo, p-cpe:/a:amazon:linux:glibc-langpack-br, p-cpe:/a:amazon:linux:glibc-langpack-brx, p-cpe:/a:amazon:linux:glibc-langpack-bs, p-cpe:/a:amazon:linux:glibc-langpack-byn, p-cpe:/a:amazon:linux:glibc-langpack-ca, p-cpe:/a:amazon:linux:glibc-langpack-ce, p-cpe:/a:amazon:linux:glibc-langpack-chr, p-cpe:/a:amazon:linux:glibc-langpack-cmn, p-cpe:/a:amazon:linux:glibc-langpack-crh, p-cpe:/a:amazon:linux:glibc-langpack-cs, p-cpe:/a:amazon:linux:glibc-langpack-csb, p-cpe:/a:amazon:linux:glibc-langpack-cv, p-cpe:/a:amazon:linux:glibc-langpack-cy, p-cpe:/a:amazon:linux:glibc-langpack-da, p-cpe:/a:amazon:linux:glibc-langpack-de, p-cpe:/a:amazon:linux:glibc-langpack-doi, p-cpe:/a:amazon:linux:glibc-langpack-dv, p-cpe:/a:amazon:linux:glibc-langpack-dz, p-cpe:/a:amazon:linux:glibc-langpack-el, p-cpe:/a:amazon:linux:glibc-langpack-en, p-cpe:/a:amazon:linux:glibc-langpack-eo, p-cpe:/a:amazon:linux:glibc-langpack-es, p-cpe:/a:amazon:linux:glibc-langpack-et, p-cpe:/a:amazon:linux:glibc-langpack-eu, p-cpe:/a:amazon:linux:glibc-langpack-fa, p-cpe:/a:amazon:linux:glibc-langpack-ff, p-cpe:/a:amazon:linux:glibc-langpack-fi, p-cpe:/a:amazon:linux:glibc-langpack-fil, p-cpe:/a:amazon:linux:glibc-langpack-fo, p-cpe:/a:amazon:linux:glibc-langpack-fr, p-cpe:/a:amazon:linux:glibc-langpack-fur, p-cpe:/a:amazon:linux:glibc-langpack-fy, p-cpe:/a:amazon:linux:glibc-langpack-ga, p-cpe:/a:amazon:linux:glibc-langpack-gd, p-cpe:/a:amazon:linux:glibc-langpack-gez, p-cpe:/a:amazon:linux:glibc-langpack-gl, p-cpe:/a:amazon:linux:glibc-langpack-gu, p-cpe:/a:amazon:linux:glibc-langpack-gv, p-cpe:/a:amazon:linux:glibc-langpack-ha, p-cpe:/a:amazon:linux:glibc-langpack-hak, p-cpe:/a:amazon:linux:glibc-langpack-he, p-cpe:/a:amazon:linux:glibc-langpack-hi, p-cpe:/a:amazon:linux:glibc-langpack-hne, p-cpe:/a:amazon:linux:glibc-langpack-hr, p-cpe:/a:amazon:linux:glibc-langpack-hsb, p-cpe:/a:amazon:linux:glibc-langpack-ht, p-cpe:/a:amazon:linux:glibc-langpack-hu, p-cpe:/a:amazon:linux:glibc-langpack-hy, p-cpe:/a:amazon:linux:glibc-langpack-ia, p-cpe:/a:amazon:linux:glibc-langpack-id, p-cpe:/a:amazon:linux:glibc-langpack-ig, p-cpe:/a:amazon:linux:glibc-langpack-ik, p-cpe:/a:amazon:linux:glibc-langpack-is, p-cpe:/a:amazon:linux:glibc-langpack-it, p-cpe:/a:amazon:linux:glibc-langpack-iu, p-cpe:/a:amazon:linux:glibc-langpack-ja, p-cpe:/a:amazon:linux:glibc-langpack-ka, p-cpe:/a:amazon:linux:glibc-langpack-kk, p-cpe:/a:amazon:linux:glibc-langpack-kl, p-cpe:/a:amazon:linux:glibc-langpack-km, p-cpe:/a:amazon:linux:glibc-langpack-kn, p-cpe:/a:amazon:linux:glibc-langpack-ko, p-cpe:/a:amazon:linux:glibc-langpack-kok, p-cpe:/a:amazon:linux:glibc-langpack-ks, p-cpe:/a:amazon:linux:glibc-langpack-ku, p-cpe:/a:amazon:linux:glibc-langpack-kw, p-cpe:/a:amazon:linux:glibc-langpack-ky, p-cpe:/a:amazon:linux:glibc-langpack-lb, p-cpe:/a:amazon:linux:glibc-langpack-lg, p-cpe:/a:amazon:linux:glibc-langpack-li, p-cpe:/a:amazon:linux:glibc-langpack-lij, p-cpe:/a:amazon:linux:glibc-langpack-ln, p-cpe:/a:amazon:linux:glibc-langpack-lo, p-cpe:/a:amazon:linux:glibc-langpack-lt, p-cpe:/a:amazon:linux:glibc-langpack-lv, p-cpe:/a:amazon:linux:glibc-langpack-lzh, p-cpe:/a:amazon:linux:glibc-langpack-mag, p-cpe:/a:amazon:linux:glibc-langpack-mai, p-cpe:/a:amazon:linux:glibc-langpack-mg, p-cpe:/a:amazon:linux:glibc-langpack-mhr, p-cpe:/a:amazon:linux:glibc-langpack-mi, p-cpe:/a:amazon:linux:glibc-langpack-mk, p-cpe:/a:amazon:linux:glibc-langpack-ml, p-cpe:/a:amazon:linux:glibc-langpack-mn, p-cpe:/a:amazon:linux:glibc-langpack-mni, p-cpe:/a:amazon:linux:glibc-langpack-mr, p-cpe:/a:amazon:linux:glibc-langpack-ms, p-cpe:/a:amazon:linux:glibc-langpack-mt, p-cpe:/a:amazon:linux:glibc-langpack-my, p-cpe:/a:amazon:linux:glibc-langpack-nan, p-cpe:/a:amazon:linux:glibc-langpack-nb, p-cpe:/a:amazon:linux:glibc-langpack-nds, p-cpe:/a:amazon:linux:glibc-langpack-ne, p-cpe:/a:amazon:linux:glibc-langpack-nhn, p-cpe:/a:amazon:linux:glibc-langpack-niu, p-cpe:/a:amazon:linux:glibc-langpack-nl, p-cpe:/a:amazon:linux:glibc-langpack-nn, p-cpe:/a:amazon:linux:glibc-langpack-nr, p-cpe:/a:amazon:linux:glibc-langpack-nso, p-cpe:/a:amazon:linux:glibc-langpack-oc, p-cpe:/a:amazon:linux:glibc-langpack-om, p-cpe:/a:amazon:linux:glibc-langpack-or, p-cpe:/a:amazon:linux:glibc-langpack-os, p-cpe:/a:amazon:linux:glibc-langpack-pa, p-cpe:/a:amazon:linux:glibc-langpack-pap, p-cpe:/a:amazon:linux:glibc-langpack-pl, p-cpe:/a:amazon:linux:glibc-langpack-ps, p-cpe:/a:amazon:linux:glibc-langpack-pt, p-cpe:/a:amazon:linux:glibc-langpack-quz, p-cpe:/a:amazon:linux:glibc-langpack-raj, p-cpe:/a:amazon:linux:glibc-langpack-ro, p-cpe:/a:amazon:linux:glibc-langpack-ru, p-cpe:/a:amazon:linux:glibc-langpack-rw, p-cpe:/a:amazon:linux:glibc-langpack-sa, p-cpe:/a:amazon:linux:glibc-langpack-sat, p-cpe:/a:amazon:linux:glibc-langpack-sc, p-cpe:/a:amazon:linux:glibc-langpack-sd, p-cpe:/a:amazon:linux:glibc-langpack-se, p-cpe:/a:amazon:linux:glibc-langpack-sgs, p-cpe:/a:amazon:linux:glibc-langpack-shs, p-cpe:/a:amazon:linux:glibc-langpack-si, p-cpe:/a:amazon:linux:glibc-langpack-sid, p-cpe:/a:amazon:linux:glibc-langpack-sk, p-cpe:/a:amazon:linux:glibc-langpack-sl, p-cpe:/a:amazon:linux:glibc-langpack-so, p-cpe:/a:amazon:linux:glibc-langpack-sq, p-cpe:/a:amazon:linux:glibc-langpack-sr, p-cpe:/a:amazon:linux:glibc-langpack-ss, p-cpe:/a:amazon:linux:glibc-langpack-st, p-cpe:/a:amazon:linux:glibc-langpack-sv, p-cpe:/a:amazon:linux:glibc-langpack-sw, p-cpe:/a:amazon:linux:glibc-langpack-szl, p-cpe:/a:amazon:linux:glibc-langpack-ta, p-cpe:/a:amazon:linux:glibc-langpack-tcy, p-cpe:/a:amazon:linux:glibc-langpack-te, p-cpe:/a:amazon:linux:glibc-langpack-tg, p-cpe:/a:amazon:linux:glibc-langpack-th, p-cpe:/a:amazon:linux:glibc-langpack-the, p-cpe:/a:amazon:linux:glibc-langpack-ti, p-cpe:/a:amazon:linux:glibc-langpack-tig, p-cpe:/a:amazon:linux:glibc-langpack-tk, p-cpe:/a:amazon:linux:glibc-langpack-tl, p-cpe:/a:amazon:linux:glibc-langpack-tn, p-cpe:/a:amazon:linux:glibc-langpack-tr, p-cpe:/a:amazon:linux:glibc-langpack-ts, p-cpe:/a:amazon:linux:glibc-langpack-tt, p-cpe:/a:amazon:linux:glibc-langpack-ug, p-cpe:/a:amazon:linux:glibc-langpack-uk, p-cpe:/a:amazon:linux:glibc-langpack-unm, p-cpe:/a:amazon:linux:glibc-langpack-ur, p-cpe:/a:amazon:linux:glibc-langpack-uz, p-cpe:/a:amazon:linux:glibc-langpack-ve, p-cpe:/a:amazon:linux:glibc-langpack-vi, p-cpe:/a:amazon:linux:glibc-langpack-wa, p-cpe:/a:amazon:linux:glibc-langpack-wae, p-cpe:/a:amazon:linux:glibc-langpack-wal, p-cpe:/a:amazon:linux:glibc-langpack-wo, p-cpe:/a:amazon:linux:glibc-langpack-xh, p-cpe:/a:amazon:linux:glibc-langpack-yi, p-cpe:/a:amazon:linux:glibc-langpack-yo, p-cpe:/a:amazon:linux:glibc-langpack-yue, p-cpe:/a:amazon:linux:glibc-langpack-zh, p-cpe:/a:amazon:linux:glibc-langpack-zu, p-cpe:/a:amazon:linux:glibc-locale-source, p-cpe:/a:amazon:linux:glibc-minimal-langpack, p-cpe:/a:amazon:linux:glibc-nss-devel, p-cpe:/a:amazon:linux:glibc-static, p-cpe:/a:amazon:linux:glibc-utils, p-cpe:/a:amazon:linux:libcrypt, p-cpe:/a:amazon:linux:libcrypt-nss, p-cpe:/a:amazon:linux:nscd, p-cpe:/a:amazon:linux:nss_db, p-cpe:/a:amazon:linux:nss_hesiod, p-cpe:/a:amazon:linux:nss_nis, cpe:/o:amazon:linux:2

Required KB Items: Host/local_checks_enabled, Host/AmazonLinux/release, Host/AmazonLinux/rpm-list

Patch Publication Date: 2018/07/24

Reference Information

CVE: CVE-2017-15670, CVE-2017-15804, CVE-2017-18269, CVE-2018-11236

ALAS: 2018-1048