Vulnerabilities > CVE-2017-18269 - Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability in GNU Glibc
Attack vector
NETWORK Attack complexity
LOW Privileges required
NONE Confidentiality impact
HIGH Integrity impact
HIGH Availability impact
HIGH Summary
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.
Vulnerable Configurations
| Part | Description | Count |
|---|---|---|
| Application | 11 | |
| OS | 1 |
Common Weakness Enumeration (CWE)
Common Attack Pattern Enumeration and Classification (CAPEC)
- Buffer Overflow via Environment Variables This attack pattern involves causing a buffer overflow through manipulation of environment variables. Once the attacker finds that they can modify an environment variable, they may try to overflow associated buffers. This attack leverages implicit trust often placed in environment variables.
- Overflow Buffers Buffer Overflow attacks target improper or missing bounds checking on buffer operations, typically triggered by input injected by an attacker. As a consequence, an attacker is able to write past the boundaries of allocated buffer regions in memory, causing a program crash or potentially redirection of execution as per the attackers' choice.
- Client-side Injection-induced Buffer Overflow This type of attack exploits a buffer overflow vulnerability in targeted client software through injection of malicious content from a custom-built hostile service.
- Filter Failure through Buffer Overflow In this attack, the idea is to cause an active filter to fail by causing an oversized transaction. An attacker may try to feed overly long input strings to the program in an attempt to overwhelm the filter (by causing a buffer overflow) and hoping that the filter does not fail securely (i.e. the user input is let into the system unfiltered).
- MIME Conversion An attacker exploits a weakness in the MIME conversion routine to cause a buffer overflow and gain control over the mail server machine. The MIME system is designed to allow various different information formats to be interpreted and sent via e-mail. Attack points exist when data are converted to MIME compatible format and back.
Nessus
NASL family SuSE Local Security Checks NASL id OPENSUSE-2019-539.NASL description This update for glibc fixes the following security issues : - CVE-2017-18269: An SSE2-optimized memmove implementation for i386 did not correctly perform the overlapping memory check if the source memory range spaned the middle of the address space, resulting in corrupt data being produced by the copy operation. This may have disclosed information to context-dependent attackers, resulted in a denial of service or code execution (bsc#1094150). - CVE-2018-11236: Prevent integer overflow on 32-bit architectures when processing very long pathname arguments to the realpath function, leading to a stack-based buffer overflow (bsc#1094161). - CVE-2018-11237: An AVX-512-optimized implementation of the mempcpy function may have writen data beyond the target buffer, leading to a buffer overflow in __mempcpy_avx512_no_vzeroupper (bsc#1092877, bsc#1094154). This update was imported from the SUSE:SLE-15:Update update project. last seen 2020-06-01 modified 2020-06-02 plugin id 123228 published 2019-03-27 reporter This script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/123228 title openSUSE Security Update : glibc (openSUSE-2019-539) NASL family SuSE Local Security Checks NASL id SUSE_SU-2018-1991-1.NASL description This update for glibc fixes the following security issues : - CVE-2017-18269: An SSE2-optimized memmove implementation for i386 did not correctly perform the overlapping memory check if the source memory range spaned the middle of the address space, resulting in corrupt data being produced by the copy operation. This may have disclosed information to context-dependent attackers, resulted in a denial of service or code execution (bsc#1094150). - CVE-2018-11236: Prevent integer overflow on 32-bit architectures when processing very long pathname arguments to the realpath function, leading to a stack-based buffer overflow (bsc#1094161). - CVE-2018-11237: An AVX-512-optimized implementation of the mempcpy function may have writen data beyond the target buffer, leading to a buffer overflow in __mempcpy_avx512_no_vzeroupper (bsc#1092877, bsc#1094154). Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-06-01 modified 2020-06-02 plugin id 120053 published 2019-01-02 reporter This script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/120053 title SUSE SLED15 / SLES15 Security Update : glibc (SUSE-SU-2018:1991-1) NASL family PhotonOS Local Security Checks NASL id PHOTONOS_PHSA-2018-1_0-0155_GLIBC.NASL description An update of the glibc package has been released. last seen 2020-03-17 modified 2019-02-07 plugin id 121853 published 2019-02-07 reporter This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/121853 title Photon OS 1.0: Glibc PHSA-2018-1.0-0155 NASL family SuSE Local Security Checks NASL id SUSE_SU-2018-1562-1.NASL description This update for glibc fixes the following issues : - CVE-2017-18269: Fix SSE2 memmove issue when crossing 2GB boundary (bsc#1094150) - CVE-2018-11236: Fix overflow in path length computation (bsc#1094161) - CVE-2018-11237: Don last seen 2020-06-01 modified 2020-06-02 plugin id 110393 published 2018-06-07 reporter This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/110393 title SUSE SLED12 / SLES12 Security Update : glibc (SUSE-SU-2018:1562-1) NASL family SuSE Local Security Checks NASL id OPENSUSE-2018-567.NASL description This update for glibc fixes the following issues : - CVE-2017-18269: Fix SSE2 memmove issue when crossing 2GB boundary (bsc#1094150) - CVE-2018-11236: Fix overflow in path length computation (bsc#1094161) - CVE-2018-11237: Don last seen 2020-06-05 modified 2018-06-08 plugin id 110407 published 2018-06-08 reporter This script is Copyright (C) 2018-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/110407 title openSUSE Security Update : glibc (openSUSE-2018-567) NASL family PhotonOS Local Security Checks NASL id PHOTONOS_PHSA-2018-2_0-0064.NASL description An update of 'glibc', 'binutils' packages of Photon OS has been released. last seen 2019-02-21 modified 2019-02-07 plugin id 111951 published 2018-08-17 reporter Tenable source https://www.tenable.com/plugins/index.php?view=single&id=111951 title Photon OS 2.0: Binutils / Glibc PHSA-2018-2.0-0064 (deprecated) NASL family PhotonOS Local Security Checks NASL id PHOTONOS_PHSA-2018-2_0-0064_BINUTILS.NASL description An update of the binutils package has been released. last seen 2020-03-17 modified 2019-02-07 plugin id 121960 published 2019-02-07 reporter This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/121960 title Photon OS 2.0: Binutils PHSA-2018-2.0-0064 NASL family PhotonOS Local Security Checks NASL id PHOTONOS_PHSA-2018-2_0-0064_GLIBC.NASL description An update of the glibc package has been released. last seen 2020-03-17 modified 2019-02-07 plugin id 121961 published 2019-02-07 reporter This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/121961 title Photon OS 2.0: Glibc PHSA-2018-2.0-0064 NASL family PhotonOS Local Security Checks NASL id PHOTONOS_PHSA-2018-1_0-0155.NASL description An update of 'glibc' packages of Photon OS has been released. last seen 2019-02-08 modified 2019-02-07 plugin id 111939 published 2018-08-17 reporter Tenable source https://www.tenable.com/plugins/index.php?view=single&id=111939 title Photon OS 1.0: Glibc PHSA-2018-1.0-0155 (deprecated) NASL family SuSE Local Security Checks NASL id SUSE_SU-2018-1562-2.NASL description This update for glibc fixes the following issues : CVE-2017-18269: Fix SSE2 memmove issue when crossing 2GB boundary (bsc#1094150) CVE-2018-11236: Fix overflow in path length computation (bsc#1094161) CVE-2018-11237: Don last seen 2020-06-01 modified 2020-06-02 plugin id 118259 published 2018-10-22 reporter This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/118259 title SUSE SLES12 Security Update : glibc (SUSE-SU-2018:1562-2) NASL family SuSE Local Security Checks NASL id OPENSUSE-2018-788.NASL description This update for glibc fixes the following security issues : - CVE-2017-18269: An SSE2-optimized memmove implementation for i386 did not correctly perform the overlapping memory check if the source memory range spaned the middle of the address space, resulting in corrupt data being produced by the copy operation. This may have disclosed information to context-dependent attackers, resulted in a denial of service or code execution (bsc#1094150). - CVE-2018-11236: Prevent integer overflow on 32-bit architectures when processing very long pathname arguments to the realpath function, leading to a stack-based buffer overflow (bsc#1094161). - CVE-2018-11237: An AVX-512-optimized implementation of the mempcpy function may have writen data beyond the target buffer, leading to a buffer overflow in __mempcpy_avx512_no_vzeroupper (bsc#1092877, bsc#1094154). This update was imported from the SUSE:SLE-15:Update update project. last seen 2020-06-05 modified 2018-08-02 plugin id 111501 published 2018-08-02 reporter This script is Copyright (C) 2018-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/111501 title openSUSE Security Update : glibc (openSUSE-2018-788) NASL family Amazon Linux Local Security Checks NASL id AL2_ALAS-2018-1048.NASL 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) last seen 2020-06-01 modified 2020-06-02 plugin id 111335 published 2018-07-26 reporter This script is Copyright (C) 2018 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/111335 title Amazon Linux 2 : glibc (ALAS-2018-1048)
References
- https://sourceware.org/bugzilla/show_bug.cgi?id=22644
- https://github.com/fingolfin/memmove-bug
- https://security.netapp.com/advisory/ntap-20190401-0001/
- https://security.netapp.com/advisory/ntap-20190329-0001/
- https://usn.ubuntu.com/4416-1/
- https://sourceware.org/git/gitweb.cgi?p=glibc.git%3Bh=cd66c0e584c6d692bc8347b5e72723d02b8a8ada