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SUSE-SU-2017:2871-2

Опубликовано: 16 нояб. 2017
Источник: suse-cvrf

Описание

Security update for wget

This update for wget fixes the following security issues:

  • CVE-2017-13089,CVE-2017-13090: Missing checks for negative remaining_chunk_size in skip_short_body and fd_read_body could cause stack buffer overflows, which could have been exploited by malicious servers. (bsc#1064715,bsc#1064716)

Список пакетов

SUSE Linux Enterprise Desktop 12 SP2
wget-1.14-21.3.1
SUSE Linux Enterprise Desktop 12 SP3
wget-1.14-21.3.1
SUSE Linux Enterprise Server 12 SP1-LTSS
wget-1.14-21.3.1
SUSE Linux Enterprise Server 12 SP2
wget-1.14-21.3.1
SUSE Linux Enterprise Server 12 SP3
wget-1.14-21.3.1
SUSE Linux Enterprise Server 12-LTSS
wget-1.14-21.3.1
SUSE Linux Enterprise Server for SAP Applications 12 SP1
wget-1.14-21.3.1
SUSE Linux Enterprise Server for SAP Applications 12 SP2
wget-1.14-21.3.1
SUSE Linux Enterprise Server for SAP Applications 12 SP3
wget-1.14-21.3.1
SUSE OpenStack Cloud 6
wget-1.14-21.3.1

Ссылки

Описание

The http.c:skip_short_body() function is called in some circumstances, such as when processing redirects. When the response is sent chunked in wget before 1.19.2, the chunk parser uses strtol() to read each chunk's length, but doesn't check that the chunk length is a non-negative number. The code then tries to skip the chunk in pieces of 512 bytes by using the MIN() macro, but ends up passing the negative chunk length to connect.c:fd_read(). As fd_read() takes an int argument, the high 32 bits of the chunk length are discarded, leaving fd_read() with a completely attacker controlled length argument.

Затронутые продукты
SUSE Linux Enterprise Desktop 12 SP2:wget-1.14-21.3.1
SUSE Linux Enterprise Desktop 12 SP3:wget-1.14-21.3.1
SUSE Linux Enterprise Server 12 SP1-LTSS:wget-1.14-21.3.1
SUSE Linux Enterprise Server 12 SP2:wget-1.14-21.3.1
Ссылки

Описание

The retr.c:fd_read_body() function is called when processing OK responses. When the response is sent chunked in wget before 1.19.2, the chunk parser uses strtol() to read each chunk's length, but doesn't check that the chunk length is a non-negative number. The code then tries to read the chunk in pieces of 8192 bytes by using the MIN() macro, but ends up passing the negative chunk length to retr.c:fd_read(). As fd_read() takes an int argument, the high 32 bits of the chunk length are discarded, leaving fd_read() with a completely attacker controlled length argument. The attacker can corrupt malloc metadata after the allocated buffer.

Затронутые продукты
SUSE Linux Enterprise Desktop 12 SP2:wget-1.14-21.3.1
SUSE Linux Enterprise Desktop 12 SP3:wget-1.14-21.3.1
SUSE Linux Enterprise Server 12 SP1-LTSS:wget-1.14-21.3.1
SUSE Linux Enterprise Server 12 SP2:wget-1.14-21.3.1
Ссылки