dbcve.org
Iphone OsOperating system · Apple

CVE-2010-1797

HIGH · 9.3 CVSS v2.0 Published 2010-08-16
No fix yet
No fix has been published. The vendor has not shipped a fixed release or patch. You remain exposed.
See remediation →
100/100
Remediation priority · Urgent
Public exploit Remotely reachable No privileges Zero-click

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
Multiple stack-based buffer overflows in the cff_decoder_parse_charstrings function in the CFF Type2 CharStrings interpreter in cff/cffgload.c in FreeType before 2.4.2, as used in Apple iOS before 4.0.2 on the iPhone and iPod touch and before 3.2.2 on the iPad, allow remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via crafted CFF opcodes in embedded fonts in a PDF document, as demonstrated by JailbreakMe. NOTE: some of these details are obtained from third party information.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis
How this class of weakness works · CWE-119

The program reads or writes outside the bounds of an allocated buffer, corrupting adjacent memory. With crafted input an attacker can overwrite control data and, with effort, redirect execution to their own code. Remediation ranges from bounds checking and safe library functions to compiler mitigations, usually alongside a careful audit of the surrounding code.

General guidance for the memory buffer bounds error class — the official description and references above are authoritative for this specific CVE. Want a bespoke review and a reviewed fix? Ask our team →

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
Iphone OsOperating system
Affected:= 1.0.0= 1.0.1= 1.0.2= 1.1.0= 1.1.1= 1.1.2= 1.1.3= 1.1.4= 1.1.5= 2.0= 2.0.0= 2.0.1

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
M
Authentication
None
Confidentiality
Complete
Integrity
Complete
Availability
Complete

AV:N/AC:M/Au:N/C:C/I:C/A:C

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Recommended fix High confidence

FreeType 2.4.2 or later (or iOS 4.0.2+/iPadOS 3.2.2+)

  1. 1. Identify the FreeType library version in use by examining the application's dependencies or the compiled binary
  2. 2. Obtain FreeType version 2.4.2 or later from the official FreeType distribution (freetype.org or freetype.sourceforge.net)
  3. 3. Recompile or relink any application that links against the vulnerable FreeType library with the updated version
  4. 4. For iOS devices: upgrade iOS to version 4.0.2 or later for iPhone/iPod touch, or version 3.2.2 or later for iPad, as these iOS updates include the patched FreeType library
  5. 5. Verify the fix by checking the FreeType version at runtime or confirming the iOS version on the device
Caveat Very old iOS versions (1.0.0-1.1.0) may not support upgrading to iOS 4.0.2+ due to hardware limitations; those devices may need to be replaced

Generated from the published advisory — verify against the referenced sources before acting.

No vendor fix exists Iphone Os has not published a patch for this.

There is no version to upgrade to and no patch to apply. Every affected install stays exposed until the vendor ships a fix — or somebody else builds one.

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Free · runs locally
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2010-1797 in production — separate from our analysis above.

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What this is

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What belongs here
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  • Version or environment caveats, and links to real fixes
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