Topic

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

Red Hat Product Security has rated this update as having a security impact of Moderate. 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 binutils packages provide a collection of binary utilities for the manipulation of object code in various object file formats. It includes the ar, as, gprof, ld, nm, objcopy, objdump, ranlib, readelf, size, strings, strip, and addr2line utilities.

Security Fix(es):

• binutils: integer overflow leads to heap-based buffer overflow in objdump (CVE-2018-1000876)
• binutils: Stack Exhaustion in the demangling functions provided by libiberty (CVE-2018-12641)
• binutils: NULL pointer dereference in work_stuff_copy_to_from in cplus-dem.c. (CVE-2018-12697)

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 - 1594410 - CVE-2018-12641 binutils: Stack Exhaustion in the demangling functions provided by libiberty
• BZ - 1595417 - CVE-2018-12697 binutils: NULL pointer dereference in work_stuff_copy_to_from in cplus-dem.c.
• BZ - 1624776 - binutils: ld removes some R_X86_64_JUMP_SLOT relocations
• BZ - 1652587 - Add support for the .attach_to_group pseudo-op to the assembler
• BZ - 1664699 - CVE-2018-1000876 binutils: integer overflow leads to heap-based buffer overflow in objdump
• BZ - 1670014 - binutils: Enable gold linker on all architectures with upstream implementation
• BZ - 1699745 - Failed ld plt-main/pltgot test cases

CVEs

• CVE-2018-12641
• CVE-2018-12697
• CVE-2018-1000876

References

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