Apple iOS up to 8.4.1 tidy memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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7.0$5k-$25k0.00

Summaryinfo

A vulnerability was found in Apple iOS up to 8.4.1. It has been rated as critical. Impacted is an unknown function of the component tidy. The manipulation leads to memory corruption. This vulnerability is traded as CVE-2015-5522. There is no exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in Apple iOS up to 8.4.1 (Smartphone Operating System) and classified as critical. This issue affects an unknown function of the component tidy. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Heap-based buffer overflow in the ParseValue function in lexer.c in tidy before 4.9.31 allows remote attackers to cause a denial of service (crash) via vectors involving a command character in an href.

The weakness was shared 09/16/2015 by Fernando Muñoz with NULLGroup.com as HT205212 as confirmed advisory (Website). It is possible to read the advisory at support.apple.com. The identification of this vulnerability is CVE-2015-5522 since 07/14/2015. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 06/16/2022). It is expected to see the exploit prices for this product increasing in the near future.

The vulnerability scanner Nessus provides a plugin with the ID 84831 (Debian DLA-273-1 : tidy security update), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 168028 (SUSE Enterprise Linux Security update for tidy (SUSE-SU-2015:1513-1)).

Upgrading to version 9 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (84831), SecurityFocus (BID 75037†) and Vulnerability Center (SBV-53058†). The entries VDB-76963, VDB-76964, VDB-77828 and VDB-77762 are related to this item. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 7.0

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 84831
Nessus Name: Debian DLA-273-1 : tidy security update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 703309
OpenVAS Name: Debian Security Advisory DSA 3309-1 (tidy - security update)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
Exposure Time: 🔍

Upgrade: iOS 9

Timelineinfo

06/04/2015 🔍
07/14/2015 +40 days 🔍
08/11/2015 +28 days 🔍
09/16/2015 +36 days 🔍
09/16/2015 +0 days 🔍
09/18/2015 +2 days 🔍
09/30/2015 +12 days 🔍
10/01/2015 +1 days 🔍
06/16/2022 +2450 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT205212
Researcher: Fernando Muñoz
Organization: NULLGroup.com
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2015-5522 (🔍)
GCVE (CVE): GCVE-0-2015-5522
GCVE (VulDB): GCVE-100-77819

OVAL: 🔍

SecurityFocus: 75037 - Tidy 'tmbstr.c' Heap Based Buffer Overflow Vulnerability
SecurityTracker: 1033703
Vulnerability Center: 53058 - Apple WatchOS <2 Remote Code Execution due to a Memory Corruption Issue in Tidy - CVE-2015-5522, Medium

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

Entryinfo

Created: 09/18/2015 13:09
Updated: 06/16/2022 09:48
Changes: 09/18/2015 13:09 (68), 02/01/2018 07:14 (12), 06/16/2022 09:44 (3), 06/16/2022 09:48 (1)
Complete: 🔍
Cache ID: 216:7F8:103

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