cbcvebase.
CVE-2016-4119
published 2016-08-26

CVE-2016-4119: Adobe Reader and Acrobat before 11.0.16, Acrobat and Acrobat Reader DC Classic before 15.006.30172, and Acrobat and Acrobat Reader DC Continuous before…

PriorityP269critical9.8CVSS 3.0
AVNACLPRNUINSUCHIHAH
ITWVulnCheck KEV
Exploited in the wild
EPSS
3.96%
89.3th percentile
Adobe Reader and Acrobat before 11.0.16, Acrobat and Acrobat Reader DC Classic before 15.006.30172, and Acrobat and Acrobat Reader DC Continuous before 15.016.20039 on Windows and OS X allow attackers to execute arbitrary code or cause a denial of service (memory corruption) via unspecified vectors, a different vulnerability than CVE-2016-1037, CVE-2016-1063, CVE-2016-1064, CVE-2016-1071, CVE-2016-1072, CVE-2016-1073, CVE-2016-1074, CVE-2016-1076, CVE-2016-1077, CVE-2016-1078, CVE-2016-1080, CVE-2016-1081, CVE-2016-1082, CVE-2016-1083, CVE-2016-1084, CVE-2016-1085, CVE-2016-1086, CVE-2016-1088, CVE-2016-1093, CVE-2016-1095, CVE-2016-1116, CVE-2016-1118, CVE-2016-1119, CVE-2016-1120, CVE-2016-1123, CVE-2016-1124, CVE-2016-1125, CVE-2016-1126, CVE-2016-1127, CVE-2016-1128, CVE-2016-1129, CVE-2016-1130, CVE-2016-4088, CVE-2016-4089, CVE-2016-4090, CVE-2016-4093, CVE-2016-4094, CVE-2016-4096, CVE-2016-4097, CVE-2016-4098, CVE-2016-4099, CVE-2016-4100, CVE-2016-4101, CVE-2016-4103, CVE-2016-4104, and CVE-2016-4105.

Affected

6 ranges
VendorProductVersion rangeFixed in
adobeacrobat<= 11.0.16
adobeacrobat_dc<= 15.006.30174
adobeacrobat_dc<= 15.016.20045
adobeacrobat_reader_dc<= 15.006.30174
adobeacrobat_reader_dc<= 15.016.20045
adobereader<= 11.0.16

Detection & IOCsextracted from sources · hover to see the quote

processAcroRd32.exe
  • Crash occurs in AcroRd32.exe at AcroRd32_60000000!CTJPEGDecoderReadNextTile+0x24661 (address 6021d2e1) with access violation (code c0000005) when processing a specially crafted PDF with a corrupted deflate-compressed image stream in an object.
  • The vulnerability is triggered by a single-byte modification at offset 0x25B0C within obj 29 of the PDF, which stores a deflate-compressed image (width 405/0x195, height 134/0x86), causing a use-after-free when the corrupted stream is parsed.
  • The freed heap buffer (size 0xfe0c) is accessed via ECX (derived from ESI+0xC8), where ECX points to an already-freed allocation. Detection can focus on heap use-after-free patterns in AcroRd32 involving CTJPEGDecoderReadNextTile and BIB/AGM module call chains.
  • Heap spray pattern: freed/reallocated heap buffers are filled with 0xc0c0c0c0, which can serve as a memory pattern indicator during exploit attempts against this vulnerability.
  • The decompressed image data in the PoC PDF contains the ASCII string 'AGLOSUVVVUTRNID=' which can be used as a memory or file-content search signature to identify the malicious PDF.
  • ·Affected versions are Adobe Reader/Acrobat before 11.0.16, Acrobat/Reader DC Classic before 15.006.30172, and Acrobat/Reader DC Continuous before 15.016.20039 on Windows and OS X.
  • ·The crash and use-after-free analysis was performed on Adobe Reader DC (32-bit, AcroRd32.exe) with Page Heap (verifier) enabled; crash addresses and offsets may differ across builds or with ASLR.

CVSS provenance

nvdv3.09.8CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
nvdv2.010.0CRITICALAV:N/AC:L/Au:N/C:C/I:C/A:C
vulncheck9.8CRITICAL
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