Topic

An update for elfutils is now available for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security impact of Low. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Description

The elfutils packages contain a number of utility programs and libraries related to the creation and maintenance of executable code.

The following packages have been upgraded to a later upstream version: elfutils (0.176). (BZ#1676504)

Security Fix(es):

• elfutils: Heap-based buffer over-read in libdw/dwarf_getaranges.c:dwarf_getaranges() via crafted file (CVE-2018-16062)
• elfutils: Double-free due to double decompression of sections in crafted ELF causes crash (CVE-2018-16402)
• elfutils: Heap-based buffer over-read in libdw/dwarf_getabbrev.c and libwd/dwarf_hasattr.c causes crash (CVE-2018-16403)
• elfutils: invalid memory address dereference was discovered in dwfl_segment_report_module.c in libdwfl (CVE-2018-18310)
• elfutils: eu-size cannot handle recursive ar files (CVE-2018-18520)
• elfutils: Divide-by-zero in arlib_add_symbols function in arlib.c (CVE-2018-18521)
• elfutils: heap-based buffer over-read in read_srclines in dwarf_getsrclines.c in libdw (CVE-2019-7149)
• elfutils: segmentation fault in elf64_xlatetom in libelf/elf32_xlatetom.c (CVE-2019-7150)
• elfutils: Out of bound write in elf_cvt_note in libelf/note_xlate.h (CVE-2019-7664)
• elfutils: heap-based buffer over-read in function elf32_xlatetom in elf32_xlatetom.c (CVE-2019-7665)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes:

For detailed information on changes in this release, see the Red Hat Enterprise Linux 7.7 Release Notes linked from the References section.

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

Affected Products

• Red Hat Enterprise Linux Server 7 x86_64
• Red Hat Enterprise Linux Workstation 7 x86_64
• Red Hat Enterprise Linux Desktop 7 x86_64
• Red Hat Enterprise Linux for IBM z Systems 7 s390x
• Red Hat Enterprise Linux for Power, big endian 7 ppc64
• Red Hat Enterprise Linux for Scientific Computing 7 x86_64
• Red Hat Enterprise Linux for Power, little endian 7 ppc64le

Fixes

• BZ - 1623752 - CVE-2018-16062 elfutils: Heap-based buffer over-read in libdw/dwarf_getaranges.c:dwarf_getaranges() via crafted file
• BZ - 1625050 - CVE-2018-16402 elfutils: Double-free due to double decompression of sections in crafted ELF causes crash
• BZ - 1625055 - CVE-2018-16403 elfutils: Heap-based buffer over-read in libdw/dwarf_getabbrev.c and libwd/dwarf_hasattr.c causes crash
• BZ - 1642604 - CVE-2018-18310 elfutils: invalid memory address dereference was discovered in dwfl_segment_report_module.c in libdwfl
• BZ - 1646477 - CVE-2018-18520 elfutils: eu-size cannot handle recursive ar files
• BZ - 1646482 - CVE-2018-18521 elfutils: Divide-by-zero in arlib_add_symbols function in arlib.c
• BZ - 1671443 - CVE-2019-7149 elfutils: heap-based buffer over-read in read_srclines in dwarf_getsrclines.c in libdw
• BZ - 1671446 - CVE-2019-7150 elfutils: segmentation fault in elf64_xlatetom in libelf/elf32_xlatetom.c
• BZ - 1677536 - CVE-2019-7664 elfutils: Out of bound write in elf_cvt_note in libelf/note_xlate.h
• BZ - 1677538 - CVE-2019-7665 elfutils: heap-based buffer over-read in function elf32_xlatetom in elf32_xlatetom.c
• BZ - 1704754 - elfutils xlate (cross-endian) functions might not convert an ELF Note header

CVEs

• CVE-2018-16062
• CVE-2018-16402
• CVE-2018-16403
• CVE-2018-18310
• CVE-2018-18520
• CVE-2018-18521
• CVE-2019-7149
• CVE-2019-7150
• CVE-2019-7664
• CVE-2019-7665

References

• https://access.redhat.com/security/updates/classification/#low
• https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/7.7_release_notes/index