Vulnerabilities > CVE-2017-12106 - Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability in Pl32 Photoline 20.02
Attack vector
NETWORK Attack complexity
MEDIUM Privileges required
NONE Confidentiality impact
PARTIAL Integrity impact
PARTIAL Availability impact
PARTIAL Summary
A memory corruption vulnerability exists in the .TGA parsing functionality of Computerinsel Photoline 20.02. A specially crafted .TGA file can cause an out of bounds write resulting in potential code execution. An attacker can send a specific .TGA file to trigger this vulnerability.
Vulnerable Configurations
| Part | Description | Count |
|---|---|---|
| Application | 1 |
Common Weakness Enumeration (CWE)
Common Attack Pattern Enumeration and Classification (CAPEC)
- Buffer Overflow via Environment Variables This attack pattern involves causing a buffer overflow through manipulation of environment variables. Once the attacker finds that they can modify an environment variable, they may try to overflow associated buffers. This attack leverages implicit trust often placed in environment variables.
- Overflow Buffers Buffer Overflow attacks target improper or missing bounds checking on buffer operations, typically triggered by input injected by an attacker. As a consequence, an attacker is able to write past the boundaries of allocated buffer regions in memory, causing a program crash or potentially redirection of execution as per the attackers' choice.
- Client-side Injection-induced Buffer Overflow This type of attack exploits a buffer overflow vulnerability in targeted client software through injection of malicious content from a custom-built hostile service.
- Filter Failure through Buffer Overflow In this attack, the idea is to cause an active filter to fail by causing an oversized transaction. An attacker may try to feed overly long input strings to the program in an attempt to overwhelm the filter (by causing a buffer overflow) and hoping that the filter does not fail securely (i.e. the user input is let into the system unfiltered).
- MIME Conversion An attacker exploits a weakness in the MIME conversion routine to cause a buffer overflow and gain control over the mail server machine. The MIME system is designed to allow various different information formats to be interpreted and sent via e-mail. Attack points exist when data are converted to MIME compatible format and back.
Seebug
| bulletinFamily | exploit |
| description | ### Summary A memory corruption vulnerability exists in the .TGA parsing functionality of Computerinsel Photoline 20.02. A specially crafted .TGA file can cause an out of bounds write resulting in potential code execution. An attacker can send a specific .TGA file to trigger this vulnerability. ### Tested Versions Computerinsel Photoline 20.02 ### Product URLs https://www.pl32.com/ ### CVSSv3 Score 8.8 - CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H ### CWE CWE-787: Out-of-bounds Write ### Details The code responsible for the vulnerability is provided below: ``` .text:0073AC45 mov ecx, [esi+20h] .text:0073AC48 lea edx, [esp+34h+v16_LOOP_COUNTER] .text:0073AC4C push edx .text:0073AC4D call read_data .text:0073AC52 test ax, ax .text:0073AC55 jnz short loc_73AC79 ... .text:0073AC7E cmp [esp+34h+v16_LOOP_COUNTER], 0 .text:0073AC83 mov [esp+34h+var_14], 0 .text:0073AC8B jz short end_loop .text:0073AC8D lea ecx, [ecx+0] ... .text:0073ACCB loc_73ACCB: ; CODE XREF: sub_73AB90+124j .text:0073ACCB movzx eax, ax .text:0073ACCE lea edx, [esp+34h+var_14] .text:0073ACD2 push edx ; void * .text:0073ACD3 mov ecx, esi .text:0073ACD5 movzx edi, ax .text:0073ACD8 call memcpy_caller_prolog .text:0073ACDD cmp [esp+34h+v16_LOOP_COUNTER], 0 .text:0073ACE2 jnz short continue_loop ``` In short a dword value is taken directly from the .TGA file. This value is later used as a loop repeat number. Which each loop iteration a memcpy operation is performed. This gives the attacker the opportunity to cause memory corruption and a buffer overflow. The data that is copied from the source for the memcpy function is based on attackers data ### Crash Information ``` 0:000> !analyze -v ******************************************************************************* * * * Exception Analysis * * * ******************************************************************************* Failed calling InternetOpenUrl, GLE=12029 FAULTING_IP: image00400000+b44e34 00f44e34 89448ff8 mov dword ptr [edi+ecx*4-8],eax EXCEPTION_RECORD: ffffffff -- (.exr 0xffffffffffffffff) ExceptionAddress: 00f44e34 (image00400000+0x00b44e34) ExceptionCode: c0000005 (Access violation) ExceptionFlags: 00000000 NumberParameters: 2 Parameter[0]: 00000001 Parameter[1]: 05156000 Attempt to write to address 05156000 FAULTING_THREAD: 00007ce4 DEFAULT_BUCKET_ID: INVALID_POINTER_WRITE PROCESS_NAME: image00400000 ERROR_CODE: (NTSTATUS) 0xc0000005 - Instrukcja spod 0x%08lx odwo EXCEPTION_CODE: (NTSTATUS) 0xc0000005 - Instrukcja spod 0x%08lx odwo EXCEPTION_PARAMETER1: 00000001 EXCEPTION_PARAMETER2: 05156000 WRITE_ADDRESS: 05156000 FOLLOWUP_IP: image00400000+b44e34 00f44e34 89448ff8 mov dword ptr [edi+ecx*4-8],eax DETOURED_IMAGE: 1 MOD_LIST: <ANALYSIS/> NTGLOBALFLAG: 470 APPLICATION_VERIFIER_FLAGS: 0 PRIMARY_PROBLEM_CLASS: INVALID_POINTER_WRITE BUGCHECK_STR: APPLICATION_FAULT_INVALID_POINTER_WRITE LAST_CONTROL_TRANSFER: from 0067f66f to 00f44e34 STACK_TEXT: WARNING: Stack unwind information not available. Following frames may be wrong. 0018f1a4 0067f66f 05156000 0018f200 00000008 image00400000+0xb44e34 00000000 00000000 00000000 00000000 00000000 image00400000+0x27f66f SYMBOL_STACK_INDEX: 0 SYMBOL_NAME: image00400000+b44e34 FOLLOWUP_NAME: MachineOwner MODULE_NAME: image00400000 DEBUG_FLR_IMAGE_TIMESTAMP: 589ee44a STACK_COMMAND: ~0s ; kb BUCKET_ID: APPLICATION_FAULT_INVALID_POINTER_WRITE_DETOURED_image00400000+b44e34 IMAGE_NAME: E:\photoline\PhotoLine.exe FAILURE_BUCKET_ID: INVALID_POINTER_WRITE_c0000005_E:photoline_PhotoLine.exe!Unknown WATSON_STAGEONE_URL: http://watson.microsoft.com/StageOne/image00400000/20_0_0_2/589ee44a/image00400000/20_0_0_2/589ee44a/c0000005/00b44e34.htm? Retriage=1 Followup: MachineOwner --------- 0:000> db @edi-50 05155fb0 00 00 00 00 41 41 41 41-00 00 00 00 41 41 41 41 ....AAAA....AAAA 05155fc0 00 00 00 00 41 41 41 41-00 00 00 00 41 41 41 41 ....AAAA....AAAA 05155fd0 00 00 00 00 41 41 41 41-00 00 00 00 41 41 41 41 ....AAAA....AAAA 05155fe0 00 00 00 00 41 41 41 41-00 00 00 00 41 41 41 41 ....AAAA....AAAA 05155ff0 00 00 00 00 41 41 41 41-00 00 00 00 41 41 41 41 ....AAAA....AAAA 05156000 ?? ?? ?? ?? ?? ?? ?? ??-?? ?? ?? ?? ?? ?? ?? ?? ???????????????? 05156010 ?? ?? ?? ?? ?? ?? ?? ??-?? ?? ?? ?? ?? ?? ?? ?? ???????????????? 05156020 ?? ?? ?? ?? ?? ?? ?? ??-?? ?? ?? ?? ?? ?? ?? ?? ???????????????? ``` ### Timeline * 2017-09-26 - Vendor Disclosure * 2017-10-04 - Public Release |
| id | SSV:96631 |
| last seen | 2017-11-19 |
| modified | 2017-10-10 |
| published | 2017-10-10 |
| reporter | Root |
| title | Computerinsel Photoline TGA Parsing Code Execution Vulnerability(CVE-2017-12106) |
Talos
| id | TALOS-2017-0458 |
| last seen | 2019-05-29 |
| published | 2017-10-04 |
| reporter | Talos Intelligence |
| source | http://www.talosintelligence.com/vulnerability_reports/TALOS-2017-0458 |
| title | Computerinsel Photoline TGA Parsing Code Execution Vulnerability |