Vulnerability Details : CVE-2015-6778
The CJBig2_SymbolDict class in fxcodec/jbig2/JBig2_SymbolDict.cpp in PDFium, as used in Google Chrome before 47.0.2526.73, allows remote attackers to cause a denial of service (out-of-bounds memory access) or possibly have unspecified other impact via a PDF document containing crafted data with JBIG2 compression.
Vulnerability category: OverflowDenial of service
Products affected by CVE-2015-6778
- cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2015-6778
2.89%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 89 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2015-6778
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
7.5
|
HIGH | AV:N/AC:L/Au:N/C:P/I:P/A:P |
10.0
|
6.4
|
NIST |
CWE ids for CVE-2015-6778
-
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.Assigned by: nvd@nist.gov (Primary)
References for CVE-2015-6778
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http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00017.html
[security-announce] openSUSE-SU-2015:2291-1: important: Security update
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http://www.securityfocus.com/bid/78416
Google Chrome Prior to 47.0.2526.73 Multiple Security Vulnerabilities
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https://codereview.chromium.org/1388203003
Issue 1388203003: Sanitize CJBig2_SymbolDict's memory usage. - Code Review
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http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00016.html
[security-announce] openSUSE-SU-2015:2290-1: important: Security update
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http://googlechromereleases.blogspot.com/2015/12/stable-channel-update.html
Chrome Releases: Stable Channel UpdateVendor Advisory
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https://code.google.com/p/chromium/issues/detail?id=514891
514891 - Heap-buffer-overflow in CJBig2_Context::parseSymbolDict - chromium - Monorail
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https://security.gentoo.org/glsa/201603-09
Chromium: Multiple vulnerabilities (GLSA 201603-09) — Gentoo security
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http://www.securitytracker.com/id/1034298
Google Chrome Multiple Bugs Let Remote Users Execute Arbitrary Code, Bypass Security Restrictions, and Spoof Content - SecurityTracker
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http://www.debian.org/security/2015/dsa-3415
Debian -- Security Information -- DSA-3415-1 chromium-browser
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