Elfutils
CVE-2018-18520
MEDIUM
Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Lifecycle Timeline
1DescriptionNVD
An Invalid Memory Address Dereference exists in the function elf_end in libelf in elfutils through v0.174. Although eu-size is intended to support ar files inside ar files, handle_ar in size.c closes the outer ar file before handling all inner entries. The vulnerability allows attackers to cause a denial of service (application crash) with a crafted ELF file.
AnalysisAI
An Invalid Memory Address Dereference exists in the function elf_end in libelf in elfutils through v0.174. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.
Technical ContextAI
This vulnerability is classified as Buffer Overflow (CWE-119), which allows attackers to corrupt memory to execute arbitrary code or crash the application. An Invalid Memory Address Dereference exists in the function elf_end in libelf in elfutils through v0.174. Although eu-size is intended to support ar files inside ar files, handle_ar in size.c closes the outer ar file before handling all inner entries. The vulnerability allows attackers to cause a denial of service (application crash) with a crafted ELF file. Affected products include: Elfutils Project Elfutils, Debian Debian Linux, Canonical Ubuntu Linux, Opensuse Leap, Redhat Enterprise Linux Desktop.
RemediationAI
A vendor patch is available. Apply the latest security update as soon as possible. Use memory-safe languages or bounds-checking. Enable ASLR, DEP/NX, stack canaries. Use safe string functions.
libelf/elf_end.c in elfutils 0.173 allows remote attackers to cause a denial of service (double free and application cra
elfutils 0.170 has a buffer over-read in the ebl_dynamic_tag_name function of libebl/ebldynamictagname.c because SYMTAB_
A heap-based buffer over-read was discovered in the function read_srclines in dwarf_getsrclines.c in libdw in elfutils 0
An attempted excessive memory allocation was discovered in the function read_long_names in elf_begin.c in libelf in elfu
elflint.c in elfutils 0.168 does not validate the number of sections and the number of segments, which allows remote att
The handle_gnu_hash function in readelf.c in elfutils 0.168 allows remote attackers to cause a denial of service (heap-b
The check_sysv_hash function in elflint.c in elfutils 0.168 allows remote attackers to cause a denial of service (heap-b
The check_group function in elflint.c in elfutils 0.168 allows remote attackers to cause a denial of service (heap-based
The ebl_object_note_type_name function in eblobjnotetypename.c in elfutils 0.168 allows remote attackers to cause a deni
The check_symtab_shndx function in elflint.c in elfutils 0.168 allows remote attackers to cause a denial of service (hea
elf_compress.c in elfutils 0.168 does not validate the zlib compression factor, which allows remote attackers to cause a
In elfutils 0.175, a heap-based buffer over-read was discovered in the function elf32_xlatetom in elf32_xlatetom.c in li
Same weakness CWE-119 – Buffer Overflow
View allSame technique Denial Of Service
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External POC / Exploit Code
Leaving vuln.today