CVE-2026-96596— erl_tar 提取 GNU稀疏成员死循环漏洞
一分钟漏洞结论
影响对象
Erlang OTP
利用判断
尚无明确在野利用证据，仍需结合暴露面评估
建议动作
优先检查厂商安全公告和参考链接中的修复版本；无法立即升级时，限制受影响服务暴露并加强监测。
Erlang OTP 标准库（erl_tar 模块）、hexpm hex_core（hex_erl_tar 模块）、hexpm hex（mix_hex_erl_tar 模块）以及 erlang rebar3（r3_hex_erl_tar 模块）中存在一个“循环不可达退出条件”（无限循环）漏洞。攻击者通过提供特制的 GNU 稀疏（sparse）归档文件，可导致拒绝服务（DoS）攻击。 当 将归档成员写入磁盘时， 默认以 65536 字节为块大小读取数据。对于稀疏映射（sparse map）在其真实大小之前结束的 GN
可能的 ATT&CK 技术 1 AI
T1499 · Endpoint Denial of Service影响版本矩阵 9
| 厂商 | 产品 | 版本范围 | 状态 |
|---|---|---|---|
| Erlang | OTP | 29.0< 29.1.2 |
affected |
8.0< 8.1.1 |
affected | ||
fbf2c7194f6fce4b7b66dc0bcaa4f6b4b85e088f< 3086307f311b78b38644a7787a3aca6a3f95a9d5 |
affected | ||
| erlang | rebar3 | 3.27.1< * |
affected |
23dbdb5d1f87f56902aef296c88a20049cd0c6e4< * |
affected | ||
| hexpm | hex | 2.4.2< 2.5.3 |
affected |
5543a1919c709d8eb2b317f62aad76ca1eed375c< * |
affected | ||
| hexpm | hex_core | 0.14.0< 0.20.1 |
affected |
13bb9fbba418a406af614790b8d5cd458259ee70< a2ece683e6e88a3ec95ad20b09aca426e08b372e |
affected |
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一、 漏洞 CVE-2026-96596 基础信息
漏洞信息
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Vulnerability Title
erl_tar:extract/2 loops forever on a GNU sparse member with a trailing hole
来源: CVE Program / CVE List V5
Vulnerability Description
Loop with Unreachable Exit Condition ('Infinite Loop') vulnerability in Erlang OTP stdlib (erl_tar module), hexpm hex_core (hex_erl_tar module), hexpm hex (mix_hex_erl_tar module) and erlang rebar3 (r3_hex_erl_tar module) allows an attacker who supplies a tar archive to cause a denial of service via a crafted GNU sparse member.
When erl_tar:extract/1,2 writes a member to disk, erl_tar:stream_to_file_loop/3 reads it in chunks of 65536 bytes by default. For a GNU sparse member whose sparse map ends before its real size, erl_tar:do_sparse_read/3 matches its trailing-hole clause before its zero-length clause. After the chunk is used up, the trailing-hole clause reads zero bytes, does not advance the position, and recurses forever. A 2048-byte archive keeps the extracting process and one scheduler busy until the process is killed. The {max_size, N} option prevents this only when N is below the real size of the member. Extraction with the memory option is not affected.
hex_core ships its own copy of erl_tar as hex_erl_tar, and Hex and rebar3 ship hex_core with prefixed module names (mix_hex_erl_tar and r3_hex_erl_tar). These copies contain the same code and do not call stdlib's erl_tar, so they are affected on any OTP version. OTP 28 is not affected, but an application running on OTP 28 is affected if it extracts archives through an affected version of hex_core, Hex or rebar3.
This issue affects OTP from OTP 29.0 before OTP 29.1.2, corresponding to stdlib from 8.0 before 8.1.1, and rebar3 from 3.27.1 onward, and hex from 2.4.2 before 2.5.3; hex_core: from 0.14.0 before 0.20.1.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
来源: CVE Program / CVE List V5
Vulnerability Type
不可达退出条件的循环(无限循环)
来源: CVE Program / CVE List V5
受影响产品
| 厂商 | 产品 | 影响版本 | CPE | 订阅 |
|---|---|---|---|---|
| Erlang | OTP | 29.0 ~ 29.1.2 |
cpe:2.3:a:erlang:erlang\/otp:*:*:*:*:*:*:*:*
|
|
| Erlang | OTP | 8.0 ~ 8.1.1 |
cpe:2.3:a:erlang:erlang\/otp:*:*:*:*:*:*:*:*
|
|
| Erlang | OTP | fbf2c7194f6fce4b7b66dc0bcaa4f6b4b85e088f ~ 3086307f311b78b38644a7787a3aca6a3f95a9d5 |
cpe:2.3:a:erlang:erlang\/otp:*:*:*:*:*:*:*:*
|
|
| erlang | rebar3 | 3.27.1 ~ * |
cpe:2.3:a:erlang:rebar3:*:*:*:*:*:*:*:*
|
|
| erlang | rebar3 | 23dbdb5d1f87f56902aef296c88a20049cd0c6e4 ~ * |
cpe:2.3:a:erlang:rebar3:*:*:*:*:*:*:*:*
|
|
| hexpm | hex_core | 0.14.0 ~ 0.20.1 |
cpe:2.3:a:hexpm:hex_core:*:*:*:*:*:*:*:*
|
|
| hexpm | hex_core | 13bb9fbba418a406af614790b8d5cd458259ee70 ~ a2ece683e6e88a3ec95ad20b09aca426e08b372e |
cpe:2.3:a:hexpm:hex_core:*:*:*:*:*:*:*:*
|
|
| hexpm | hex | 2.4.2 ~ 2.5.3 |
cpe:2.3:a:hexpm:hex:*:*:*:*:*:*:*:*
|
|
| hexpm | hex | 5543a1919c709d8eb2b317f62aad76ca1eed375c ~ * |
cpe:2.3:a:hexpm:hex:*:*:*:*:*:*:*:*
|
|
二、漏洞 CVE-2026-96596 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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CVE-2026-96596 补丁与修复 (5)
CVE-2026-96596 其他参考 (3)
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🔗 EEF-CVE-2026-96596 - OSV related
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同批安全公告 · Erlang · 2026-10-14 · 共 3 条
| CVE-2026-94200 | 8.2 HIGH | TLS 1.3 客户端票据存储因 empty early_data 扩展崩溃 |
| CVE-2026-105236 | 6.3 MEDIUM | TLS 1.2 session resumption 在 ssl 中跨越 SNI 虚拟主机客户端证书信任边界 |
IV. Related Vulnerabilities
V. Comments for CVE-2026-96596
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